68638056 has 16 divisors (see below), whose sum is σ = 171595200. Its totient is φ = 22879344.

The previous prime is 68638007. The next prime is 68638057. The reversal of 68638056 is 65083686.

It is a super-2 number, since 2×68638056² = 9422365462918272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68637999 and 68638017.

It is not an unprimeable number, because it can be changed into a prime (68638057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1429936 + ... + 1429983.

It is an arithmetic number, because the mean of its divisors is an integer number (10724700).

Almost surely, 2^68638056 is an apocalyptic number.

It is an amenable number.

68638056 is an abundant number, since it is smaller than the sum of its proper divisors (102957144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68638056 is a wasteful number, since it uses less digits than its factorization.

68638056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859928 (or 2859924 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 68638056 is about 8284.8087485469. The cubic root of 68638056 is about 409.4381676004.

The spelling of 68638056 in words is "sixty-eight million, six hundred thirty-eight thousand, fifty-six".