2265715764 has 72 divisors (see below), whose sum is σ = 6183674952. Its totient is φ = 695347200.

The previous prime is 2265715759. The next prime is 2265715843. The reversal of 2265715764 is 4675175622.

2265715764 is a `hidden beast` number, since 2 + 2 + 6 + 5 + 71 + 576 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 106254864 + 2159460900 = 10308^2 + 46470^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181632 + ... + 193704.

Almost surely, 2^2265715764 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 2265715764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3091837476).

2265715764 is an abundant number, since it is smaller than the sum of its proper divisors (3917959188).

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

2265715764 is a wasteful number, since it uses less digits than its factorization.

2265715764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12497 (or 12492 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 2265715764 is about 47599.5353338664. The cubic root of 2265715764 is about 1313.4145067083.

The spelling of 2265715764 in words is "two billion, two hundred sixty-five million, seven hundred fifteen thousand, seven hundred sixty-four".