659979732 has 12 divisors (see below), whose sum is σ = 1539952736. Its totient is φ = 219993240.

The previous prime is 659979731. The next prime is 659979737. The reversal of 659979732 is 237979956.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659979731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27499144 + ... + 27499167.

Almost surely, 2^659979732 is an apocalyptic number.

It is an amenable number.

659979732 is an abundant number, since it is smaller than the sum of its proper divisors (879973004).

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

659979732 is a wasteful number, since it uses less digits than its factorization.

659979732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54998318 (or 54998316 counting only the distinct ones).

The product of its digits is 6429780, while the sum is 57.

The square root of 659979732 is about 25690.0706888868. The cubic root of 659979732 is about 870.6498566464.

The spelling of 659979732 in words is "six hundred fifty-nine million, nine hundred seventy-nine thousand, seven hundred thirty-two".