3172065660 has 72 divisors (see below), whose sum is σ = 9628019856. Its totient is φ = 845349120.

The previous prime is 3172065613. The next prime is 3172065671. The reversal of 3172065660 is 665602713.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 338640 + ... + 347880.

It is an arithmetic number, because the mean of its divisors is an integer number (133722498).

Almost surely, 2^3172065660 is an apocalyptic number.

3172065660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3172065660 is an abundant number, since it is smaller than the sum of its proper divisors (6455954196).

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

3172065660 is a wasteful number, since it uses less digits than its factorization.

3172065660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11163 (or 11158 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 3172065660 is about 56321.0942720398. The cubic root of 3172065660 is about 1469.3121035227.

The spelling of 3172065660 in words is "three billion, one hundred seventy-two million, sixty-five thousand, six hundred sixty".