2636648064 has 64 divisors (see below), whose sum is σ = 7781784000. Its totient is φ = 878881536.

The previous prime is 2636648039. The next prime is 2636648087. The reversal of 2636648064 is 4608466362.

2636648064 is a `hidden beast` number, since 2 + 636 + 6 + 4 + 8 + 0 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378004 + ... + 384915.

It is an arithmetic number, because the mean of its divisors is an integer number (121590375).

Almost surely, 2^2636648064 is an apocalyptic number.

2636648064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2636648064 is an abundant number, since it is smaller than the sum of its proper divisors (5145135936).

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

2636648064 is an equidigital number, since it uses as much as digits as its factorization.

2636648064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762942 (or 762924 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The square root of 2636648064 is about 51348.3014714216. The cubic root of 2636648064 is about 1381.4994665429.

The spelling of 2636648064 in words is "two billion, six hundred thirty-six million, six hundred forty-eight thousand, sixty-four".