2640766313 has 16 divisors (see below), whose sum is σ = 2715425856. Its totient is φ = 2567404800.

The previous prime is 2640766291. The next prime is 2640766327. The reversal of 2640766313 is 3136670462.

It is a cyclic number.

It is not a de Polignac number, because 2640766313 - 2¹² = 2640762217 is a prime.

It is a super-2 number, since 2×2640766313² = 13947293439751227938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640766363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1819238 + ... + 1820688.

It is an arithmetic number, because the mean of its divisors is an integer number (169714116).

Almost surely, 2^2640766313 is an apocalyptic number.

It is an amenable number.

2640766313 is a deficient number, since it is larger than the sum of its proper divisors (74659543).

2640766313 is a wasteful number, since it uses less digits than its factorization.

2640766313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864.

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 2640766313 is about 51388.3869468579. The cubic root of 2640766313 is about 1382.2183590037.

The spelling of 2640766313 in words is "two billion, six hundred forty million, seven hundred sixty-six thousand, three hundred thirteen".