669737976 has 16 divisors (see below), whose sum is σ = 1674345000. Its totient is φ = 223245984.

The previous prime is 669737951. The next prime is 669738007. The reversal of 669737976 is 679737966.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13952851 + ... + 13952898.

Almost surely, 2^669737976 is an apocalyptic number.

It is an amenable number.

669737976 is an abundant number, since it is smaller than the sum of its proper divisors (1004607024).

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

669737976 is a wasteful number, since it uses less digits than its factorization.

669737976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27905758 (or 27905754 counting only the distinct ones).

The product of its digits is 18003384, while the sum is 60.

The square root of 669737976 is about 25879.2962810042. The cubic root of 669737976 is about 874.9199278020.

The spelling of 669737976 in words is "six hundred sixty-nine million, seven hundred thirty-seven thousand, nine hundred seventy-six".