7668656 has 20 divisors (see below), whose sum is σ = 15338304. Its totient is φ = 3710400.

The previous prime is 7668653. The next prime is 7668667. The reversal of 7668656 is 6568667.

7668656 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (7668653) 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, 7235 + ... + 8226.

Almost surely, 2^7668656 is an apocalyptic number.

It is an amenable number.

7668656 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7668656 is a wasteful number, since it uses less digits than its factorization.

7668656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15500 (or 15494 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 7668656 is about 2769.2338290581. The cubic root of 7668656 is about 197.1997767252.

The spelling of 7668656 in words is "seven million, six hundred sixty-eight thousand, six hundred fifty-six".