664238495 has 8 divisors (see below), whose sum is σ = 799037520. Its totient is φ = 530089920.

The previous prime is 664238489. The next prime is 664238539. The reversal of 664238495 is 594832466.

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

It is not a de Polignac number, because 664238495 - 2⁶ = 664238431 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160361 + ... + 164450.

It is an arithmetic number, because the mean of its divisors is an integer number (99879690).

Almost surely, 2^664238495 is an apocalyptic number.

664238495 is a deficient number, since it is larger than the sum of its proper divisors (134799025).

664238495 is a wasteful number, since it uses less digits than its factorization.

664238495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325225.

The product of its digits is 1244160, while the sum is 47.

The square root of 664238495 is about 25772.8247384721. The cubic root of 664238495 is about 872.5185727964.

The spelling of 664238495 in words is "six hundred sixty-four million, two hundred thirty-eight thousand, four hundred ninety-five".