2640992760 has 96 divisors (see below), whose sum is σ = 9809411040. Its totient is φ = 603654912.

The previous prime is 2640992741. The next prime is 2640992777. The reversal of 2640992760 is 672990462.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 521487 + ... + 526526.

It is an arithmetic number, because the mean of its divisors is an integer number (102181365).

Almost surely, 2^2640992760 is an apocalyptic number.

2640992760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640992760 is an abundant number, since it is smaller than the sum of its proper divisors (7168418280).

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

2640992760 is a wasteful number, since it uses less digits than its factorization.

2640992760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048037 (or 1048030 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 2640992760 is about 51390.5901892555. The cubic root of 2640992760 is about 1382.2578665074.

The spelling of 2640992760 in words is "two billion, six hundred forty million, nine hundred ninety-two thousand, seven hundred sixty".