669552532 has 36 divisors (see below), whose sum is σ = 1309805280. Its totient is φ = 299170960.

The previous prime is 669552487. The next prime is 669552581. The reversal of 669552532 is 235255966.

It is a super-2 number, since 2×669552532² = 896601186215222048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16833 + ... + 40279.

It is an arithmetic number, because the mean of its divisors is an integer number (36383480).

Almost surely, 2^669552532 is an apocalyptic number.

It is an amenable number.

669552532 is a deficient number, since it is larger than the sum of its proper divisors (640252748).

669552532 is a wasteful number, since it uses less digits than its factorization.

669552532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23532 (or 23519 counting only the distinct ones).

The product of its digits is 486000, while the sum is 43.

The square root of 669552532 is about 25875.7131689158. The cubic root of 669552532 is about 874.8391680451.

The spelling of 669552532 in words is "six hundred sixty-nine million, five hundred fifty-two thousand, five hundred thirty-two".