331977664 has 14 divisors (see below), whose sum is σ = 658768304. Its totient is φ = 165988800.

The previous prime is 331977593. The next prime is 331977707. The reversal of 331977664 is 466779133.

It is a super-2 number, since 2×331977664² = 220418338789793792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2593512 + ... + 2593639.

Almost surely, 2^331977664 is an apocalyptic number.

It is an amenable number.

331977664 is a deficient number, since it is larger than the sum of its proper divisors (326790640).

331977664 is an equidigital number, since it uses as much as digits as its factorization.

331977664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5187163 (or 5187153 counting only the distinct ones).

The product of its digits is 571536, while the sum is 46.

The square root of 331977664 is about 18220.2542243515. The cubic root of 331977664 is about 692.4200285604.

The spelling of 331977664 in words is "three hundred thirty-one million, nine hundred seventy-seven thousand, six hundred sixty-four".