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345656565 = 355476053
BaseRepresentation
bin10100100110100…
…100110011110101
3220002102011200000
4110212210303311
51201442002230
654144341513
711365014042
oct2446446365
9802364600
10345656565
11168128991
1297914899
13567c5217
1433c9a1c9
152052bb60
hex149a4cf5

345656565 has 48 divisors (see below), whose sum is σ = 634652928. Its totient is φ = 180398016.

The previous prime is 345656543. The next prime is 345656573. The reversal of 345656565 is 565656543.

345656565 is a `hidden beast` number, since 34 + 5 + 6 + 56 + 565 = 666.

345656565 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 345656565 - 26 = 345656501 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 345656565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54079 + ... + 60131.

It is an arithmetic number, because the mean of its divisors is an integer number (13221936).

Almost surely, 2345656565 is an apocalyptic number.

It is an amenable number.

345656565 is a deficient number, since it is larger than the sum of its proper divisors (288996363).

345656565 is an equidigital number, since it uses as much as digits as its factorization.

345656565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6120 (or 6108 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 45.

The square root of 345656565 is about 18591.8413558206. The cubic root of 345656565 is about 701.8025414397.

The spelling of 345656565 in words is "three hundred forty-five million, six hundred fifty-six thousand, five hundred sixty-five".

Divisors: 1 3 5 9 15 27 45 47 81 135 141 235 243 405 423 705 1215 1269 2115 3807 6053 6345 11421 18159 19035 30265 54477 57105 90795 163431 272385 284491 490293 817155 853473 1422455 1470879 2451465 2560419 4267365 7354395 7681257 12802095 23043771 38406285 69131313 115218855 345656565