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64131035 = 529442283
BaseRepresentation
bin1111010010100…
…0111111011011
311110200012020112
43310220333123
5112404143120
610210314535
71406050643
oct364507733
9143605215
1064131035
1133222661
1219588a4b
1310395377
148735523
15596bbc5
hex3d28fdb

64131035 has 8 divisors (see below), whose sum is σ = 79611120. Its totient is φ = 49535584.

The previous prime is 64130959. The next prime is 64131037. The reversal of 64131035 is 53013146.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64131035 - 212 = 64126939 is a prime.

It is a super-2 number, since 2×641310352 = 8225579300342450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64131035.

It is not an unprimeable number, because it can be changed into a prime (64131037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220997 + ... + 221286.

It is an arithmetic number, because the mean of its divisors is an integer number (9951390).

Almost surely, 264131035 is an apocalyptic number.

64131035 is a deficient number, since it is larger than the sum of its proper divisors (15480085).

64131035 is a wasteful number, since it uses less digits than its factorization.

64131035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442317.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 64131035 is about 8008.1854998495. The cubic root of 64131035 is about 400.2728034867.

The spelling of 64131035 in words is "sixty-four million, one hundred thirty-one thousand, thirty-five".

Divisors: 1 5 29 145 442283 2211415 12826207 64131035