68656863 has 48 divisors (see below), whose sum is σ = 111050496. Its totient is φ = 37340160.

The previous prime is 68656849. The next prime is 68656877. The reversal of 68656863 is 36865686.

It is an interprime number because it is at equal distance from previous prime (68656849) and next prime (68656877).

It is not a de Polignac number, because 68656863 - 2⁶ = 68656799 is a prime.

Its product of digits (1244160) is a multiple of the sum of its prime factors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68656883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 219195 + ... + 219507.

It is an arithmetic number, because the mean of its divisors is an integer number (2313552).

Almost surely, 2^68656863 is an apocalyptic number.

68656863 is a deficient number, since it is larger than the sum of its proper divisors (42393633).

68656863 is a wasteful number, since it uses less digits than its factorization.

68656863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 367 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 48.

The square root of 68656863 is about 8285.9437000260. The cubic root of 68656863 is about 409.4755598814.

The spelling of 68656863 in words is "sixty-eight million, six hundred fifty-six thousand, eight hundred sixty-three".