331666677 has 8 divisors (see below), whose sum is σ = 491358080. Its totient is φ = 221111100.

The previous prime is 331666663. The next prime is 331666691. The reversal of 331666677 is 776666133.

It is an interprime number because it is at equal distance from previous prime (331666663) and next prime (331666691).

It is a de Polignac number, because none of the positive numbers 2^k-331666677 is a prime.

It is a super-2 number, since 2×331666677² = 220005569264444658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331666627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6141949 + ... + 6142002.

It is an arithmetic number, because the mean of its divisors is an integer number (61419760).

Almost surely, 2^331666677 is an apocalyptic number.

It is an amenable number.

331666677 is a deficient number, since it is larger than the sum of its proper divisors (159691403).

331666677 is a wasteful number, since it uses less digits than its factorization.

331666677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12283960 (or 12283954 counting only the distinct ones).

The product of its digits is 571536, while the sum is 45.

The square root of 331666677 is about 18211.7181232304. The cubic root of 331666677 is about 692.2037480440.

The spelling of 331666677 in words is "three hundred thirty-one million, six hundred sixty-six thousand, six hundred seventy-seven".