664120586 has 8 divisors (see below), whose sum is σ = 996416544. Its totient is φ = 331981740.

The previous prime is 664120577. The next prime is 664120627. The reversal of 664120586 is 685021466.

664120586 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28070 + ... + 46001.

It is an arithmetic number, because the mean of its divisors is an integer number (124552068).

Almost surely, 2^664120586 is an apocalyptic number.

664120586 is a deficient number, since it is larger than the sum of its proper divisors (332295958).

664120586 is a wasteful number, since it uses less digits than its factorization.

664120586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78556.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 664120586 is about 25770.5371694111. The cubic root of 664120586 is about 872.4669428066.

The spelling of 664120586 in words is "six hundred sixty-four million, one hundred twenty thousand, five hundred eighty-six".