2658990664 has 16 divisors (see below), whose sum is σ = 5438844720. Its totient is φ = 1208632080.

The previous prime is 2658990661. The next prime is 2658990673. The reversal of 2658990664 is 4660998562.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2658990661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15107814 + ... + 15107989.

It is an arithmetic number, because the mean of its divisors is an integer number (339927795).

Almost surely, 2^2658990664 is an apocalyptic number.

It is an amenable number.

2658990664 is an abundant number, since it is smaller than the sum of its proper divisors (2779854056).

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

2658990664 is a wasteful number, since it uses less digits than its factorization.

2658990664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30215820 (or 30215816 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 55.

The square root of 2658990664 is about 51565.4018116799. The cubic root of 2658990664 is about 1385.3907092345.

The spelling of 2658990664 in words is "two billion, six hundred fifty-eight million, nine hundred ninety thousand, six hundred sixty-four".