2520656164 has 24 divisors (see below), whose sum is σ = 5029908408. Its totient is φ = 1094945280.

The previous prime is 2520656153. The next prime is 2520656167. The reversal of 2520656164 is 4616560252.

It can be written as a sum of positive squares in 4 ways, for example, as 828979264 + 1691676900 = 28792^2 + 41130^2 .

It is a super-2 number, since 2×2520656164² = 12707414994222389792, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2520656167) 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, 1424827 + ... + 1426594.

It is an arithmetic number, because the mean of its divisors is an integer number (209579517).

Almost surely, 2^2520656164 is an apocalyptic number.

It is an amenable number.

2520656164 is a deficient number, since it is larger than the sum of its proper divisors (2509252244).

2520656164 is a wasteful number, since it uses less digits than its factorization.

2520656164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851455 (or 2851453 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 2520656164 is about 50206.1367165409. The cubic root of 2520656164 is about 1360.9365240598.

The spelling of 2520656164 in words is "two billion, five hundred twenty million, six hundred fifty-six thousand, one hundred sixty-four".