669573472 has 48 divisors (see below), whose sum is σ = 1337176512. Its totient is φ = 330007680.

The previous prime is 669573461. The next prime is 669573479. The reversal of 669573472 is 274375966.

It is a super-2 number, since 2×669573472² = 896657268812269568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669573479) 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, 968647 + ... + 969337.

It is an arithmetic number, because the mean of its divisors is an integer number (27857844).

Almost surely, 2^669573472 is an apocalyptic number.

It is an amenable number.

669573472 is a deficient number, since it is larger than the sum of its proper divisors (667603040).

669573472 is a wasteful number, since it uses less digits than its factorization.

669573472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1083 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 49.

The square root of 669573472 is about 25876.1177922810. The cubic root of 669573472 is about 874.8482880371.

The spelling of 669573472 in words is "six hundred sixty-nine million, five hundred seventy-three thousand, four hundred seventy-two".