7664616688 has 20 divisors (see below), whose sum is σ = 15071841640. Its totient is φ = 3775109184.

The previous prime is 7664616679. The next prime is 7664616727. The reversal of 7664616688 is 8866164667.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3573843 + ... + 3575986.

It is an arithmetic number, because the mean of its divisors is an integer number (753592082).

Almost surely, 2^7664616688 is an apocalyptic number.

It is an amenable number.

7664616688 is a deficient number, since it is larger than the sum of its proper divisors (7407224952).

7664616688 is a wasteful number, since it uses less digits than its factorization.

7664616688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7149904 (or 7149898 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 58.

The square root of 7664616688 is about 87547.7965913477. The cubic root of 7664616688 is about 1971.6514695772.

The spelling of 7664616688 in words is "seven billion, six hundred sixty-four million, six hundred sixteen thousand, six hundred eighty-eight".