2265038664 has 64 divisors (see below), whose sum is σ = 6609254400. Its totient is φ = 633382464.

The previous prime is 2265038651. The next prime is 2265038669. The reversal of 2265038664 is 4668305622.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2265038669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135534 + ... + 151325.

It is an arithmetic number, because the mean of its divisors is an integer number (103269600).

Almost surely, 2^2265038664 is an apocalyptic number.

2265038664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2265038664 is an abundant number, since it is smaller than the sum of its proper divisors (4344215736).

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

2265038664 is a wasteful number, since it uses less digits than its factorization.

2265038664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286922 (or 286918 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The square root of 2265038664 is about 47592.4223380151. The cubic root of 2265038664 is about 1313.2836574670.

The spelling of 2265038664 in words is "two billion, two hundred sixty-five million, thirty-eight thousand, six hundred sixty-four".