68866868 has 24 divisors (see below), whose sum is σ = 144984000. Its totient is φ = 27960768.

The previous prime is 68866859. The next prime is 68866871. The reversal of 68866868 is 86866886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64193 + ... + 65256.

It is an arithmetic number, because the mean of its divisors is an integer number (6041000).

Almost surely, 2^68866868 is an apocalyptic number.

It is an amenable number.

68866868 is an abundant number, since it is smaller than the sum of its proper divisors (76117132).

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

68866868 is a wasteful number, since it uses less digits than its factorization.

68866868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129479 (or 129477 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 56.

The square root of 68866868 is about 8298.6063890270. The cubic root of 68866868 is about 409.8926310166.

The spelling of 68866868 in words is "sixty-eight million, eight hundred sixty-six thousand, eight hundred sixty-eight".