3166521664 has 56 divisors (see below), whose sum is σ = 6346256040. Its totient is φ = 1567555584.

The previous prime is 3166521649. The next prime is 3166521667. The reversal of 3166521664 is 4661256613.

It can be written as a sum of positive squares in 4 ways, for example, as 7182400 + 3159339264 = 2680^2 + 56208^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3166521667) 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, 3322212 + ... + 3323164.

Almost surely, 2^3166521664 is an apocalyptic number.

It is an amenable number.

3166521664 is an abundant number, since it is smaller than the sum of its proper divisors (3179734376).

3166521664 is a wasteful number, since it uses less digits than its factorization.

3166521664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427 (or 1417 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 3166521664 is about 56271.8549898615. The cubic root of 3166521664 is about 1468.4556047855.

The spelling of 3166521664 in words is "three billion, one hundred sixty-six million, five hundred twenty-one thousand, six hundred sixty-four".