331666002 has 40 divisors (see below), whose sum is σ = 763277196. Its totient is φ = 107565408.

The previous prime is 331665979. The next prime is 331666031. The reversal of 331666002 is 200666133.

It can be written as a sum of positive squares in 2 ways, for example, as 330839721 + 826281 = 18189^2 + 909^2 .

It is a super-2 number, since 2×331666002² = 220004673765328008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 in 19 ways as a sum of consecutive naturals, for example, 21673 + ... + 33660.

Almost surely, 2^331666002 is an apocalyptic number.

331666002 is an abundant number, since it is smaller than the sum of its proper divisors (431611194).

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

331666002 is a wasteful number, since it uses less digits than its factorization.

331666002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55384 (or 55375 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 331666002 is about 18211.6995911969. The cubic root of 331666002 is about 692.2032784582.

The spelling of 331666002 in words is "three hundred thirty-one million, six hundred sixty-six thousand, two".