664055595 has 36 divisors (see below), whose sum is σ = 1338957360. Its totient is φ = 303567264.

The previous prime is 664055573. The next prime is 664055617. The reversal of 664055595 is 595550466.

664055595 is a `hidden beast` number, since 6 + 6 + 4 + 0 + 55 + 595 = 666.

664055595 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (664055573) and next prime (664055617).

It is not a de Polignac number, because 664055595 - 2⁶ = 664055531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 664055595.

It is a congruent number.

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 35 ways as a sum of consecutive naturals, for example, 148375 + ... + 152784.

It is an arithmetic number, because the mean of its divisors is an integer number (37193260).

Almost surely, 2^664055595 is an apocalyptic number.

664055595 is an abundant number, since it is smaller than the sum of its proper divisors (674901765).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664055595 is a wasteful number, since it uses less digits than its factorization.

664055595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301184 (or 301174 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The square root of 664055595 is about 25769.2761830828. The cubic root of 664055595 is about 872.4384819367.

The spelling of 664055595 in words is "six hundred sixty-four million, fifty-five thousand, five hundred ninety-five".