2644653570 has 32 divisors (see below), whose sum is σ = 6835413312. Its totient is φ = 650991552.

The previous prime is 2644653541. The next prime is 2644653607. The reversal of 2644653570 is 753564462.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3390192 + ... + 3390971.

It is an arithmetic number, because the mean of its divisors is an integer number (213606666).

Almost surely, 2^2644653570 is an apocalyptic number.

2644653570 is an abundant number, since it is smaller than the sum of its proper divisors (4190759742).

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

2644653570 is a wasteful number, since it uses less digits than its factorization.

2644653570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781186.

The product of its (nonzero) digits is 604800, while the sum is 42.

The square root of 2644653570 is about 51426.1953677306. The cubic root of 2644653570 is about 1382.8962435147.

The spelling of 2644653570 in words is "two billion, six hundred forty-four million, six hundred fifty-three thousand, five hundred seventy".