3207131664 has 80 divisors (see below), whose sum is σ = 9045641280. Its totient is φ = 971066880.

The previous prime is 3207131647. The next prime is 3207131677. The reversal of 3207131664 is 4661317023.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1196694 + ... + 1199370.

It is an arithmetic number, because the mean of its divisors is an integer number (113070516).

Almost surely, 2^3207131664 is an apocalyptic number.

It is an amenable number.

3207131664 is an abundant number, since it is smaller than the sum of its proper divisors (5838509616).

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

3207131664 is a wasteful number, since it uses less digits than its factorization.

3207131664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968 (or 4962 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 3207131664 is about 56631.5430127063. The cubic root of 3207131664 is about 1474.7065069982.

Adding to 3207131664 its reverse (4661317023), we get a palindrome (7868448687).

The spelling of 3207131664 in words is "three billion, two hundred seven million, one hundred thirty-one thousand, six hundred sixty-four".