664321366 has 8 divisors (see below), whose sum is σ = 1006156944. Its totient is φ = 328935720.

The previous prime is 664321327. The next prime is 664321381. The reversal of 664321366 is 663123466.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1612225 + ... + 1612636.

It is an arithmetic number, because the mean of its divisors is an integer number (125769618).

Almost surely, 2^664321366 is an apocalyptic number.

664321366 is a deficient number, since it is larger than the sum of its proper divisors (341835578).

664321366 is a wasteful number, since it uses less digits than its factorization.

664321366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224966.

The product of its digits is 93312, while the sum is 37.

The square root of 664321366 is about 25774.4324088815. The cubic root of 664321366 is about 872.5548566916.

The spelling of 664321366 in words is "six hundred sixty-four million, three hundred twenty-one thousand, three hundred sixty-six".