2640562776 has 48 divisors (see below), whose sum is σ = 7189004160. Its totient is φ = 875574720.

The previous prime is 2640562763. The next prime is 2640562783. The reversal of 2640562776 is 6772650462.

2640562776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82255 + ... + 109758.

It is an arithmetic number, because the mean of its divisors is an integer number (149770920).

Almost surely, 2^2640562776 is an apocalyptic number.

It is an amenable number.

2640562776 is an abundant number, since it is smaller than the sum of its proper divisors (4548441384).

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

2640562776 is a wasteful number, since it uses less digits than its factorization.

2640562776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192216 (or 192209 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The square root of 2640562776 is about 51386.4065293537. The cubic root of 2640562776 is about 1382.1828466091.

The spelling of 2640562776 in words is "two billion, six hundred forty million, five hundred sixty-two thousand, seven hundred seventy-six".