2506465664 has 32 divisors (see below), whose sum is σ = 5210457840. Its totient is φ = 1198743040.

The previous prime is 2506465651. The next prime is 2506465681. The reversal of 2506465664 is 4665646052.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422747 + ... + 428634.

Almost surely, 2^2506465664 is an apocalyptic number.

It is an amenable number.

2506465664 is an abundant number, since it is smaller than the sum of its proper divisors (2703992176).

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

2506465664 is an equidigital number, since it uses as much as digits as its factorization.

2506465664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851418 (or 851406 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The square root of 2506465664 is about 50064.6148891610. The cubic root of 2506465664 is about 1358.3778352222.

The spelling of 2506465664 in words is "two billion, five hundred six million, four hundred sixty-five thousand, six hundred sixty-four".