164860585 has 4 divisors (see below), whose sum is σ = 197832708. Its totient is φ = 131888464.

The previous prime is 164860561. The next prime is 164860601. The reversal of 164860585 is 585068461.

164860585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 585068461 = 113 ⋅5177597.

It can be written as a sum of positive squares in 2 ways, for example, as 80514729 + 84345856 = 8973^2 + 9184^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164860585 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, 16486054 + ... + 16486063.

It is an arithmetic number, because the mean of its divisors is an integer number (49458177).

Almost surely, 2^164860585 is an apocalyptic number.

It is an amenable number.

164860585 is a deficient number, since it is larger than the sum of its proper divisors (32972123).

164860585 is an equidigital number, since it uses as much as digits as its factorization.

164860585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32972122.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 164860585 is about 12839.8047103529. The cubic root of 164860585 is about 548.3261340773.

The spelling of 164860585 in words is "one hundred sixty-four million, eight hundred sixty thousand, five hundred eighty-five".