164584857 has 4 divisors (see below), whose sum is σ = 219446480. Its totient is φ = 109723236.

The previous prime is 164584829. The next prime is 164584883. The reversal of 164584857 is 758485461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 758485461 = 3 ⋅252828487.

It is not a de Polignac number, because 164584857 - 2²⁰ = 163536281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164584817) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 27430807 + ... + 27430812.

It is an arithmetic number, because the mean of its divisors is an integer number (54861620).

Almost surely, 2^164584857 is an apocalyptic number.

It is an amenable number.

164584857 is a deficient number, since it is larger than the sum of its proper divisors (54861623).

164584857 is an equidigital number, since it uses as much as digits as its factorization.

164584857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54861622.

The product of its digits is 1075200, while the sum is 48.

The square root of 164584857 is about 12829.0629821511. The cubic root of 164584857 is about 548.0202731502.

The spelling of 164584857 in words is "one hundred sixty-four million, five hundred eighty-four thousand, eight hundred fifty-seven".