2668658520 has 64 divisors (see below), whose sum is σ = 8733795840. Its totient is φ = 646947200.

The previous prime is 2668658519. The next prime is 2668658533. The reversal of 2668658520 is 258568662.

It is a self number, because there is not a number n which added to its sum of digits gives 2668658520.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009536 + ... + 1012175.

It is an arithmetic number, because the mean of its divisors is an integer number (136465560).

Almost surely, 2^2668658520 is an apocalyptic number.

2668658520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2668658520 is an abundant number, since it is smaller than the sum of its proper divisors (6065137320).

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

2668658520 is a wasteful number, since it uses less digits than its factorization.

2668658520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021736 (or 2021732 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 48.

The square root of 2668658520 is about 51659.0603863446. The cubic root of 2668658520 is about 1387.0677312628.

The spelling of 2668658520 in words is "two billion, six hundred sixty-eight million, six hundred fifty-eight thousand, five hundred twenty".