664269585 has 16 divisors (see below), whose sum is σ = 1214664576. Its totient is φ = 303666048.

The previous prime is 664269553. The next prime is 664269607. The reversal of 664269585 is 585962466.

It is not a de Polignac number, because 664269585 - 2⁵ = 664269553 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 3163084 + ... + 3163293.

It is an arithmetic number, because the mean of its divisors is an integer number (75916536).

Almost surely, 2^664269585 is an apocalyptic number.

It is an amenable number.

664269585 is a deficient number, since it is larger than the sum of its proper divisors (550394991).

664269585 is a wasteful number, since it uses less digits than its factorization.

664269585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6326392.

The product of its digits is 3110400, while the sum is 51.

The square root of 664269585 is about 25773.4278861001. The cubic root of 664269585 is about 872.5321854669.

The spelling of 664269585 in words is "six hundred sixty-four million, two hundred sixty-nine thousand, five hundred eighty-five".