7664427688 has 64 divisors (see below), whose sum is σ = 14760000000. Its totient is φ = 3730281984.

The previous prime is 7664427593. The next prime is 7664427697. The reversal of 7664427688 is 8867244667.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18739228 + ... + 18739636.

It is an arithmetic number, because the mean of its divisors is an integer number (230625000).

Almost surely, 2^7664427688 is an apocalyptic number.

It is an amenable number.

7664427688 is a deficient number, since it is larger than the sum of its proper divisors (7095572312).

7664427688 is a wasteful number, since it uses less digits than its factorization.

7664427688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 838 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 58.

The square root of 7664427688 is about 87546.7171743179. The cubic root of 7664427688 is about 1971.6352632790.

The spelling of 7664427688 in words is "seven billion, six hundred sixty-four million, four hundred twenty-seven thousand, six hundred eighty-eight".