664675195 has 16 divisors (see below), whose sum is σ = 840349440. Its totient is φ = 503298144.

The previous prime is 664675181. The next prime is 664675199. The reversal of 664675195 is 591576466.

It is not a de Polignac number, because 664675195 - 2¹¹ = 664673147 is a prime.

It is a super-2 number, since 2×664675195² = 883586229696576050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (664675199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133114 + ... + 138016.

It is an arithmetic number, because the mean of its divisors is an integer number (52521840).

Almost surely, 2^664675195 is an apocalyptic number.

664675195 is a deficient number, since it is larger than the sum of its proper divisors (175674245).

664675195 is a wasteful number, since it uses less digits than its factorization.

664675195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6354.

The product of its digits is 1360800, while the sum is 49.

The square root of 664675195 is about 25781.2954484448. The cubic root of 664675195 is about 872.7097417778.

The spelling of 664675195 in words is "six hundred sixty-four million, six hundred seventy-five thousand, one hundred ninety-five".