68656975 has 12 divisors (see below), whose sum is σ = 89616040. Its totient is φ = 52034400.

The previous prime is 68656957. The next prime is 68656993. The reversal of 68656975 is 57965686.

It is an interprime number because it is at equal distance from previous prime (68656957) and next prime (68656993).

It is a de Polignac number, because none of the positive numbers 2^k-68656975 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71796 + ... + 72745.

Almost surely, 2^68656975 is an apocalyptic number.

68656975 is a deficient number, since it is larger than the sum of its proper divisors (20959065).

68656975 is a wasteful number, since it uses less digits than its factorization.

68656975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144570 (or 144565 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 52.

The square root of 68656975 is about 8285.9504584568. The cubic root of 68656975 is about 409.4757825406.

The spelling of 68656975 in words is "sixty-eight million, six hundred fifty-six thousand, nine hundred seventy-five".