331630668 has 36 divisors (see below), whose sum is σ = 838852560. Its totient is φ = 110469216.

The previous prime is 331630661. The next prime is 331630687. The reversal of 331630668 is 866036133.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (331630661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87313 + ... + 91031.

It is an arithmetic number, because the mean of its divisors is an integer number (23301460).

Almost surely, 2^331630668 is an apocalyptic number.

It is an amenable number.

331630668 is an abundant number, since it is smaller than the sum of its proper divisors (507221892).

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

331630668 is a wasteful number, since it uses less digits than its factorization.

331630668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6206 (or 6201 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 331630668 is about 18210.7294746806. The cubic root of 331630668 is about 692.1786963193.

The spelling of 331630668 in words is "three hundred thirty-one million, six hundred thirty thousand, six hundred sixty-eight".