331666616 has 32 divisors (see below), whose sum is σ = 637165440. Its totient is φ = 161803488.

The previous prime is 331666609. The next prime is 331666627. The reversal of 331666616 is 616666133.

It is a super-2 number, since 2×331666616² = 220005488337782912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 331666616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54461 + ... + 60243.

It is an arithmetic number, because the mean of its divisors is an integer number (19911420).

Almost surely, 2^331666616 is an apocalyptic number.

It is an amenable number.

331666616 is a deficient number, since it is larger than the sum of its proper divisors (305498824).

331666616 is a wasteful number, since it uses less digits than its factorization.

331666616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5963 (or 5959 counting only the distinct ones).

The product of its digits is 69984, while the sum is 38.

The square root of 331666616 is about 18211.7164484845. The cubic root of 331666616 is about 692.2037056074.

The spelling of 331666616 in words is "three hundred thirty-one million, six hundred sixty-six thousand, six hundred sixteen".