331664756 has 6 divisors (see below), whose sum is σ = 580413330. Its totient is φ = 165832376.

The previous prime is 331664731. The next prime is 331664777. The reversal of 331664756 is 657466133.

It can be written as a sum of positive squares in only one way, i.e., 211411600 + 120253156 = 14540^2 + 10966^2 .

It is a super-2 number, since 2×331664756² = 220003020745079072, 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 as a sum of consecutive naturals, namely, 41458091 + ... + 41458098.

It is an arithmetic number, because the mean of its divisors is an integer number (96735555).

Almost surely, 2^331664756 is an apocalyptic number.

It is an amenable number.

331664756 is a deficient number, since it is larger than the sum of its proper divisors (248748574).

331664756 is a wasteful number, since it uses less digits than its factorization.

331664756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82916193 (or 82916191 counting only the distinct ones).

The product of its digits is 272160, while the sum is 41.

The square root of 331664756 is about 18211.6653823861. The cubic root of 331664756 is about 692.2024116360.

The spelling of 331664756 in words is "three hundred thirty-one million, six hundred sixty-four thousand, seven hundred fifty-six".