2640245560 has 16 divisors (see below), whose sum is σ = 5940552600. Its totient is φ = 1056098208.

The previous prime is 2640245551. The next prime is 2640245591. The reversal of 2640245560 is 655420462.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33003030 + ... + 33003109.

Almost surely, 2^2640245560 is an apocalyptic number.

2640245560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640245560 is an abundant number, since it is smaller than the sum of its proper divisors (3300307040).

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

2640245560 is a wasteful number, since it uses less digits than its factorization.

2640245560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66006150 (or 66006146 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 2640245560 is about 51383.3198616049. The cubic root of 2640245560 is about 1382.1274962779.

The spelling of 2640245560 in words is "two billion, six hundred forty million, two hundred forty-five thousand, five hundred sixty".