662623665 has 32 divisors (see below), whose sum is σ = 1160956800. Its totient is φ = 320056320.

The previous prime is 662623627. The next prime is 662623693. The reversal of 662623665 is 566326266.

It is not a de Polignac number, because 662623665 - 2⁹ = 662623153 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36921 + ... + 51849.

It is an arithmetic number, because the mean of its divisors is an integer number (36279900).

Almost surely, 2^662623665 is an apocalyptic number.

It is an amenable number.

662623665 is a deficient number, since it is larger than the sum of its proper divisors (498333135).

662623665 is a wasteful number, since it uses less digits than its factorization.

662623665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15217.

The product of its digits is 466560, while the sum is 42.

The square root of 662623665 is about 25741.4775216964. The cubic root of 662623665 is about 871.8109391660.

The spelling of 662623665 in words is "six hundred sixty-two million, six hundred twenty-three thousand, six hundred sixty-five".