164975585 has 4 divisors (see below), whose sum is σ = 197970708. Its totient is φ = 131980464.

The previous prime is 164975579. The next prime is 164975611. The reversal of 164975585 is 585579461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23746129 + 141229456 = 4873^2 + 11884^2 .

It is a cyclic number.

It is not a de Polignac number, because 164975585 - 2⁸ = 164975329 is a prime.

It is a Duffinian number.

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, 16497554 + ... + 16497563.

It is an arithmetic number, because the mean of its divisors is an integer number (49492677).

Almost surely, 2^164975585 is an apocalyptic number.

It is an amenable number.

164975585 is a deficient number, since it is larger than the sum of its proper divisors (32995123).

164975585 is an equidigital number, since it uses as much as digits as its factorization.

164975585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32995122.

The product of its digits is 1512000, while the sum is 50.

The square root of 164975585 is about 12844.2821909206. The cubic root of 164975585 is about 548.4536010700.

The spelling of 164975585 in words is "one hundred sixty-four million, nine hundred seventy-five thousand, five hundred eighty-five".