2665848564 has 24 divisors (see below), whose sum is σ = 6911459520. Its totient is φ = 888616152.

The previous prime is 2665848553. The next prime is 2665848593. The reversal of 2665848564 is 4658485662.

2665848564 is a `hidden beast` number, since 2 + 6 + 6 + 584 + 8 + 56 + 4 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 2665848564.

It is a congruent number.

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, 12341784 + ... + 12341999.

It is an arithmetic number, because the mean of its divisors is an integer number (287977480).

Almost surely, 2^2665848564 is an apocalyptic number.

It is an amenable number.

2665848564 is an abundant number, since it is smaller than the sum of its proper divisors (4245610956).

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

2665848564 is a wasteful number, since it uses less digits than its factorization.

2665848564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24683796 (or 24683788 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 54.

The square root of 2665848564 is about 51631.8560967936. The cubic root of 2665848564 is about 1386.5807240200.

It can be divided in two parts, 2 and 665848564, that added together give a palindrome (665848566).

The spelling of 2665848564 in words is "two billion, six hundred sixty-five million, eight hundred forty-eight thousand, five hundred sixty-four".