669638832 has 40 divisors (see below), whose sum is σ = 1736317440. Its totient is φ = 222384960.

The previous prime is 669638807. The next prime is 669638833. The reversal of 669638832 is 238836966.

669638832 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (669638833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12732 + ... + 38747.

It is an arithmetic number, because the mean of its divisors is an integer number (43407936).

Almost surely, 2^669638832 is an apocalyptic number.

It is an amenable number.

669638832 is an abundant number, since it is smaller than the sum of its proper divisors (1066678608).

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

669638832 is a wasteful number, since it uses less digits than its factorization.

669638832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51761 (or 51755 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 51.

The square root of 669638832 is about 25877.3807020726. The cubic root of 669638832 is about 874.8767530356.

The spelling of 669638832 in words is "six hundred sixty-nine million, six hundred thirty-eight thousand, eight hundred thirty-two".