7768664 has 16 divisors (see below), whose sum is σ = 15199920. Its totient is φ = 3715360.

The previous prime is 7768627. The next prime is 7768669. The reversal of 7768664 is 4668677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7768669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20927 + ... + 21294.

It is an arithmetic number, because the mean of its divisors is an integer number (949995).

Almost surely, 2^7768664 is an apocalyptic number.

It is an amenable number.

7768664 is a deficient number, since it is larger than the sum of its proper divisors (7431256).

7768664 is a wasteful number, since it uses less digits than its factorization.

7768664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42250 (or 42246 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 7768664 is about 2787.2323189860. The cubic root of 7768664 is about 198.0533135352.

The spelling of 7768664 in words is "seven million, seven hundred sixty-eight thousand, six hundred sixty-four".