669405532 has 24 divisors (see below), whose sum is σ = 1241412480. Its totient is φ = 314749440.

The previous prime is 669405523. The next prime is 669405557. The reversal of 669405532 is 235504966.

It is a congruent 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, 94432 + ... + 101272.

It is an arithmetic number, because the mean of its divisors is an integer number (51725520).

Almost surely, 2^669405532 is an apocalyptic number.

It is an amenable number.

669405532 is a deficient number, since it is larger than the sum of its proper divisors (572006948).

669405532 is a wasteful number, since it uses less digits than its factorization.

669405532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8301 (or 8299 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 669405532 is about 25872.8725115709. The cubic root of 669405532 is about 874.7751398251.

The spelling of 669405532 in words is "six hundred sixty-nine million, four hundred five thousand, five hundred thirty-two".