2665626368 has 72 divisors (see below), whose sum is σ = 5406363648. Its totient is φ = 1311593472.

The previous prime is 2665626347. The next prime is 2665626389. The reversal of 2665626368 is 8636265662.

It is an interprime number because it is at equal distance from previous prime (2665626347) and next prime (2665626389).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5299205 + ... + 5299707.

It is an arithmetic number, because the mean of its divisors is an integer number (75088384).

Almost surely, 2^2665626368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2665626368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2703181824).

2665626368 is an abundant number, since it is smaller than the sum of its proper divisors (2740737280).

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

2665626368 is a wasteful number, since it uses less digits than its factorization.

2665626368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809 (or 795 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 50.

The square root of 2665626368 is about 51629.7043183476. The cubic root of 2665626368 is about 1386.5421995448.

The spelling of 2665626368 in words is "two billion, six hundred sixty-five million, six hundred twenty-six thousand, three hundred sixty-eight".