655253665 has 64 divisors (see below), whose sum is σ = 945561600. Its totient is φ = 430617600.

The previous prime is 655253659. The next prime is 655253699. The reversal of 655253665 is 566352556.

It is not a de Polignac number, because 655253665 - 2³ = 655253657 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3660546 + ... + 3660724.

It is an arithmetic number, because the mean of its divisors is an integer number (14774400).

Almost surely, 2^655253665 is an apocalyptic number.

It is an amenable number.

655253665 is a deficient number, since it is larger than the sum of its proper divisors (290307935).

655253665 is a wasteful number, since it uses less digits than its factorization.

655253665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358.

The product of its digits is 810000, while the sum is 43.

The square root of 655253665 is about 25597.9230602797. The cubic root of 655253665 is about 868.5666559937.

The spelling of 655253665 in words is "six hundred fifty-five million, two hundred fifty-three thousand, six hundred sixty-five".