68702457 has 16 divisors (see below), whose sum is σ = 97269120. Its totient is φ = 42984192.

The previous prime is 68702443. The next prime is 68702477. The reversal of 68702457 is 75420786.

It is not a de Polignac number, because 68702457 - 2⁴ = 68702441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68702407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18108 + ... + 21570.

It is an arithmetic number, because the mean of its divisors is an integer number (6079320).

Almost surely, 2^68702457 is an apocalyptic number.

It is an amenable number.

68702457 is a deficient number, since it is larger than the sum of its proper divisors (28566663).

68702457 is a wasteful number, since it uses less digits than its factorization.

68702457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3872.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 68702457 is about 8288.6945292971. The cubic root of 68702457 is about 409.5661820307.

The spelling of 68702457 in words is "sixty-eight million, seven hundred two thousand, four hundred fifty-seven".