64668255 has 16 divisors (see below), whose sum is σ = 109556064. Its totient is φ = 32460800.

The previous prime is 64668211. The next prime is 64668269. The reversal of 64668255 is 55286646.

It is not a de Polignac number, because 64668255 - 2⁷ = 64668127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126546 + ... + 127055.

It is an arithmetic number, because the mean of its divisors is an integer number (6847254).

Almost surely, 2^64668255 is an apocalyptic number.

64668255 is a deficient number, since it is larger than the sum of its proper divisors (44887809).

64668255 is a wasteful number, since it uses less digits than its factorization.

64668255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253626.

The product of its digits is 345600, while the sum is 42.

The square root of 64668255 is about 8041.6574784058. The cubic root of 64668255 is about 401.3873802930.

The spelling of 64668255 in words is "sixty-four million, six hundred sixty-eight thousand, two hundred fifty-five".