664794383 has 8 divisors (see below), whose sum is σ = 726802176. Its totient is φ = 603048600.

The previous prime is 664794373. The next prime is 664794391. The reversal of 664794383 is 383497466.

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

It is not a de Polignac number, because 664794383 - 2²⁶ = 597685519 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 (664794313) 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, 60173 + ... + 70358.

It is an arithmetic number, because the mean of its divisors is an integer number (90850272).

Almost surely, 2^664794383 is an apocalyptic number.

664794383 is a deficient number, since it is larger than the sum of its proper divisors (62007793).

664794383 is a wasteful number, since it uses less digits than its factorization.

664794383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131005.

The product of its digits is 2612736, while the sum is 50.

The square root of 664794383 is about 25783.6068656036. The cubic root of 664794383 is about 872.7619027494.

The spelling of 664794383 in words is "six hundred sixty-four million, seven hundred ninety-four thousand, three hundred eighty-three".