164972585 has 8 divisors (see below), whose sum is σ = 202179456. Its totient is φ = 129169840.

The previous prime is 164972579. The next prime is 164972657. The reversal of 164972585 is 585279461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164972585 - 2⁴ = 164972569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350771 + ... + 351240.

It is an arithmetic number, because the mean of its divisors is an integer number (25272432).

Almost surely, 2^164972585 is an apocalyptic number.

It is an amenable number.

164972585 is a deficient number, since it is larger than the sum of its proper divisors (37206871).

164972585 is an equidigital number, since it uses as much as digits as its factorization.

164972585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702063.

The product of its digits is 604800, while the sum is 47.

The square root of 164972585 is about 12844.1654069075. The cubic root of 164972585 is about 548.4502765967.

The spelling of 164972585 in words is "one hundred sixty-four million, nine hundred seventy-two thousand, five hundred eighty-five".