331666064 has 20 divisors (see below), whose sum is σ = 646863360. Its totient is φ = 164733600.

The previous prime is 331666051. The next prime is 331666067. The reversal of 331666064 is 460666133.

It is a super-2 number, since 2×331666064² = 220004756018504192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331666067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66224 + ... + 71055.

It is an arithmetic number, because the mean of its divisors is an integer number (32343168).

Almost surely, 2^331666064 is an apocalyptic number.

It is an amenable number.

331666064 is a deficient number, since it is larger than the sum of its proper divisors (315197296).

331666064 is a wasteful number, since it uses less digits than its factorization.

331666064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137438 (or 137432 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 331666064 is about 18211.7012933993. The cubic root of 331666064 is about 692.2033215906.

The spelling of 331666064 in words is "three hundred thirty-one million, six hundred sixty-six thousand, sixty-four".