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68724695 = 513281331
BaseRepresentation
bin1000001100010…
…10011111010111
311210022120120002
410012022133113
5120043142240
610453001515
71463102354
oct406123727
9153276502
1068724695
113587a976
121b02329b
1311313200
1491ad62b
156077d15
hex418a7d7

68724695 has 12 divisors (see below), whose sum is σ = 89302536. Its totient is φ = 50749920.

The previous prime is 68724683. The next prime is 68724697. The reversal of 68724695 is 59642786.

It is not a de Polignac number, because 68724695 - 26 = 68724631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68724697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39821 + ... + 41510.

It is an arithmetic number, because the mean of its divisors is an integer number (7441878).

Almost surely, 268724695 is an apocalyptic number.

68724695 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68724695 is a deficient number, since it is larger than the sum of its proper divisors (20577841).

68724695 is a wasteful number, since it uses less digits than its factorization.

68724695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81362 (or 81349 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 68724695 is about 8290.0358865327. The cubic root of 68724695 is about 409.6103674967.

The spelling of 68724695 in words is "sixty-eight million, seven hundred twenty-four thousand, six hundred ninety-five".

Divisors: 1 5 13 65 169 845 81331 406655 1057303 5286515 13744939 68724695