2640320364 has 48 divisors (see below), whose sum is σ = 6733069056. Its totient is φ = 798638400.

The previous prime is 2640320321. The next prime is 2640320413. The reversal of 2640320364 is 4630230462.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55569 + ... + 91479.

It is an arithmetic number, because the mean of its divisors is an integer number (140272272).

Almost surely, 2^2640320364 is an apocalyptic number.

It is an amenable number.

2640320364 is an abundant number, since it is smaller than the sum of its proper divisors (4092748692).

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

2640320364 is a wasteful number, since it uses less digits than its factorization.

2640320364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36486 (or 36484 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 2640320364 is about 51384.0477580348. The cubic root of 2640320364 is about 1382.1405490649.

The spelling of 2640320364 in words is "two billion, six hundred forty million, three hundred twenty thousand, three hundred sixty-four".