2640287624 has 16 divisors (see below), whose sum is σ = 5331350220. Its totient is φ = 1218594240.

The previous prime is 2640287597. The next prime is 2640287627. The reversal of 2640287624 is 4267820462.

It can be written as a sum of positive squares in 2 ways, for example, as 2577592900 + 62694724 = 50770^2 + 7918^2 .

It is a super-2 number, since 2×2640287624² = 13942237474895130752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2640287627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12693587 + ... + 12693794.

Almost surely, 2^2640287624 is an apocalyptic number.

It is an amenable number.

2640287624 is an abundant number, since it is smaller than the sum of its proper divisors (2691062596).

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

2640287624 is a wasteful number, since it uses less digits than its factorization.

2640287624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25387400 (or 25387396 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 41.

The square root of 2640287624 is about 51383.7291756836. The cubic root of 2640287624 is about 1382.1348361889.

The spelling of 2640287624 in words is "two billion, six hundred forty million, two hundred eighty-seven thousand, six hundred twenty-four".