664583079 has 4 divisors (see below), whose sum is σ = 886110776. Its totient is φ = 443055384.

The previous prime is 664583077. The next prime is 664583107. The reversal of 664583079 is 970385466.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 664583079 - 2¹ = 664583077 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 (664583077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110763844 + ... + 110763849.

It is an arithmetic number, because the mean of its divisors is an integer number (221527694).

Almost surely, 2^664583079 is an apocalyptic number.

664583079 is a deficient number, since it is larger than the sum of its proper divisors (221527697).

664583079 is a wasteful number, since it uses less digits than its factorization.

664583079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221527696.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 664583079 is about 25779.5088975721. The cubic root of 664583079 is about 872.6694242186.

The spelling of 664583079 in words is "six hundred sixty-four million, five hundred eighty-three thousand, seventy-nine".