68715957 has 4 divisors (see below), whose sum is σ = 91621280. Its totient is φ = 45810636.

The previous prime is 68715953. The next prime is 68715967. The reversal of 68715957 is 75951786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68715957 - 2² = 68715953 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 (68715953) 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 3 ways as a sum of consecutive naturals, for example, 11452657 + ... + 11452662.

It is an arithmetic number, because the mean of its divisors is an integer number (22905320).

Almost surely, 2^68715957 is an apocalyptic number.

It is an amenable number.

68715957 is a deficient number, since it is larger than the sum of its proper divisors (22905323).

68715957 is a wasteful number, since it uses less digits than its factorization.

68715957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22905322.

The product of its digits is 529200, while the sum is 48.

The square root of 68715957 is about 8289.5088515545. The cubic root of 68715957 is about 409.5930067935.

The spelling of 68715957 in words is "sixty-eight million, seven hundred fifteen thousand, nine hundred fifty-seven".