64575009 has 16 divisors (see below), whose sum is σ = 96402240. Its totient is φ = 42719040.

The previous prime is 64575001. The next prime is 64575029. The reversal of 64575009 is 90057546.

64575009 is a `hidden beast` number, since 645 + 7 + 5 + 0 + 0 + 9 = 666.

64575009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64575009 - 2³ = 64575001 is a prime.

It is a super-4 number, since 4×64575009⁴ (a number of 32 digits) contains 4444 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64575001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5592 + ... + 12665.

It is an arithmetic number, because the mean of its divisors is an integer number (6025140).

Almost surely, 2^64575009 is an apocalyptic number.

It is an amenable number.

64575009 is a deficient number, since it is larger than the sum of its proper divisors (31827231).

64575009 is a wasteful number, since it uses less digits than its factorization.

64575009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18397 (or 18391 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 64575009 is about 8035.8577015773. The cubic root of 64575009 is about 401.1943655942.

The spelling of 64575009 in words is "sixty-four million, five hundred seventy-five thousand, nine".