664982459 has 8 divisors (see below), whose sum is σ = 667884720. Its totient is φ = 662086656.

The previous prime is 664982443. The next prime is 664982497. The reversal of 664982459 is 954289466.

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 664982459 - 2⁴ = 664982443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 664982459.

It is not an unprimeable number, because it can be changed into a prime (664982419) 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, 355244 + ... + 357110.

It is an arithmetic number, because the mean of its divisors is an integer number (83485590).

Almost surely, 2^664982459 is an apocalyptic number.

664982459 is a deficient number, since it is larger than the sum of its proper divisors (2902261).

664982459 is a wasteful number, since it uses less digits than its factorization.

664982459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229.

The product of its digits is 3732480, while the sum is 53.

The square root of 664982459 is about 25787.2538088103. The cubic root of 664982459 is about 872.8441989174.

The spelling of 664982459 in words is "six hundred sixty-four million, nine hundred eighty-two thousand, four hundred fifty-nine".