331665416 has 16 divisors (see below), whose sum is σ = 628031340. Its totient is φ = 164190400.

The previous prime is 331665409. The next prime is 331665419. The reversal of 331665416 is 614566133.

It can be written as a sum of positive squares in 2 ways, for example, as 308142916 + 23522500 = 17554^2 + 4850^2 .

It is a super-2 number, since 2×331665416² = 220003896340906112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331665419) 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, 204431 + ... + 206046.

Almost surely, 2^331665416 is an apocalyptic number.

It is an amenable number.

331665416 is a deficient number, since it is larger than the sum of its proper divisors (296365924).

331665416 is a wasteful number, since it uses less digits than its factorization.

331665416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410584 (or 410580 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 331665416 is about 18211.6835026309. The cubic root of 331665416 is about 692.2028707877.

The spelling of 331665416 in words is "three hundred thirty-one million, six hundred sixty-five thousand, four hundred sixteen".