2265566616 has 96 divisors (see below), whose sum is σ = 6196476000. Its totient is φ = 747781632.

The previous prime is 2265566599. The next prime is 2265566621. The reversal of 2265566616 is 6166655622.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5160525 + ... + 5160963.

It is an arithmetic number, because the mean of its divisors is an integer number (64546625).

Almost surely, 2^2265566616 is an apocalyptic number.

It is an amenable number.

2265566616 is an abundant number, since it is smaller than the sum of its proper divisors (3930909384).

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

2265566616 is a wasteful number, since it uses less digits than its factorization.

2265566616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 986 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 2265566616 is about 47597.9686121162. The cubic root of 2265566616 is about 1313.3856861698.

The spelling of 2265566616 in words is "two billion, two hundred sixty-five million, five hundred sixty-six thousand, six hundred sixteen".