664367255 has 8 divisors (see below), whose sum is σ = 799415232. Its totient is φ = 530044128.

The previous prime is 664367237. The next prime is 664367257. The reversal of 664367255 is 552763466.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 664367255 - 2⁸ = 664366999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664367257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179192 + ... + 182861.

It is an arithmetic number, because the mean of its divisors is an integer number (99926904).

Almost surely, 2^664367255 is an apocalyptic number.

664367255 is a deficient number, since it is larger than the sum of its proper divisors (135047977).

664367255 is a wasteful number, since it uses less digits than its factorization.

664367255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362425.

The product of its digits is 907200, while the sum is 44.

The square root of 664367255 is about 25775.3225973992. The cubic root of 664367255 is about 872.5749472432.

The spelling of 664367255 in words is "six hundred sixty-four million, three hundred sixty-seven thousand, two hundred fifty-five".