664610599 has 8 divisors (see below), whose sum is σ = 694293120. Its totient is φ = 634993656.

The previous prime is 664610593. The next prime is 664610621. The reversal of 664610599 is 995016466.

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 664610599 - 2³ = 664610591 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 (664610591) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4932 + ... + 36790.

It is an arithmetic number, because the mean of its divisors is an integer number (86786640).

Almost surely, 2^664610599 is an apocalyptic number.

664610599 is a deficient number, since it is larger than the sum of its proper divisors (29682521).

664610599 is a wasteful number, since it uses less digits than its factorization.

664610599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32789.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 664610599 is about 25780.0426493053. The cubic root of 664610599 is about 872.6814696306.

The spelling of 664610599 in words is "six hundred sixty-four million, six hundred ten thousand, five hundred ninety-nine".