7687664634 has 16 divisors (see below), whose sum is σ = 16558047072. Its totient is φ = 2365435248.

The previous prime is 7687664617. The next prime is 7687664729. The reversal of 7687664634 is 4364667867.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49279824 + ... + 49279979.

It is an arithmetic number, because the mean of its divisors is an integer number (1034877942).

Almost surely, 2^7687664634 is an apocalyptic number.

7687664634 is an abundant number, since it is smaller than the sum of its proper divisors (8870382438).

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

7687664634 is a wasteful number, since it uses less digits than its factorization.

7687664634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98559821.

The product of its digits is 24385536, while the sum is 57.

The square root of 7687664634 is about 87679.3284303661. The cubic root of 7687664634 is about 1973.6257819691.

The spelling of 7687664634 in words is "seven billion, six hundred eighty-seven million, six hundred sixty-four thousand, six hundred thirty-four".