6664631624 has 32 divisors (see below), whose sum is σ = 14304574080. Its totient is φ = 2851626624.

The previous prime is 6664631609. The next prime is 6664631657. The reversal of 6664631624 is 4261364666.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61892 + ... + 130995.

It is an arithmetic number, because the mean of its divisors is an integer number (447017940).

Almost surely, 2^6664631624 is an apocalyptic number.

It is an amenable number.

6664631624 is an abundant number, since it is smaller than the sum of its proper divisors (7639942456).

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

6664631624 is a wasteful number, since it uses less digits than its factorization.

6664631624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193517 (or 193513 counting only the distinct ones).

The product of its digits is 746496, while the sum is 44.

The square root of 6664631624 is about 81637.1951012527. The cubic root of 6664631624 is about 1881.8805334258.

The spelling of 6664631624 in words is "six billion, six hundred sixty-four million, six hundred thirty-one thousand, six hundred twenty-four".