68657697 has 12 divisors (see below), whose sum is σ = 104392080. Its totient is φ = 43362648.

The previous prime is 68657689. The next prime is 68657707. The reversal of 68657697 is 79675686.

It is a happy number.

68657697 is a `hidden beast` number, since 68 + 6 + 576 + 9 + 7 = 666.

It is not a de Polignac number, because 68657697 - 2³ = 68657689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68650697) 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, 200583 + ... + 200924.

It is an arithmetic number, because the mean of its divisors is an integer number (8699340).

Almost surely, 2^68657697 is an apocalyptic number.

It is an amenable number.

68657697 is a deficient number, since it is larger than the sum of its proper divisors (35734383).

68657697 is a wasteful number, since it uses less digits than its factorization.

68657697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401532 (or 401529 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 68657697 is about 8285.9940260659. The cubic root of 68657697 is about 409.4772178911.

The spelling of 68657697 in words is "sixty-eight million, six hundred fifty-seven thousand, six hundred ninety-seven".