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68662650 = 2352765393
BaseRepresentation
bin1000001011110…
…11010101111010
311210012102110010
410011323111322
5120034201100
610451402350
71462423440
oct405732572
9153172403
1068662650
11358382a1
121abb33b6
13112c0bb4
149194b90
156064750
hex417b57a

68662650 has 48 divisors (see below), whose sum is σ = 194612544. Its totient is φ = 15694080.

The previous prime is 68662603. The next prime is 68662651. The reversal of 68662650 is 5626686.

It is a junction number, because it is equal to n+sod(n) for n = 68662599 and 68662608.

It is not an unprimeable number, because it can be changed into a prime (68662651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31647 + ... + 33746.

It is an arithmetic number, because the mean of its divisors is an integer number (4054428).

Almost surely, 268662650 is an apocalyptic number.

68662650 is an abundant number, since it is smaller than the sum of its proper divisors (125949894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68662650 is a wasteful number, since it uses less digits than its factorization.

68662650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65415 (or 65410 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 68662650 is about 8286.2928985162. The cubic root of 68662650 is about 409.4870642836.

It can be divided in two parts, 686 and 62650, that added together give a palindrome (63336).

The spelling of 68662650 in words is "sixty-eight million, six hundred sixty-two thousand, six hundred fifty".

Divisors: 1 2 3 5 6 7 10 14 15 21 25 30 35 42 50 70 75 105 150 175 210 350 525 1050 65393 130786 196179 326965 392358 457751 653930 915502 980895 1373253 1634825 1961790 2288755 2746506 3269650 4577510 4904475 6866265 9808950 11443775 13732530 22887550 34331325 68662650