164556793 has 4 divisors (see below), whose sum is σ = 164693668. Its totient is φ = 164419920.

The previous prime is 164556767. The next prime is 164556809. The reversal of 164556793 is 397655461.

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 14077504 + 150479289 = 3752^2 + 12267^2 .

It is a cyclic number.

It is not a de Polignac number, because 164556793 - 2⁵ = 164556761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164556703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66618 + ... + 69043.

It is an arithmetic number, because the mean of its divisors is an integer number (41173417).

Almost surely, 2^164556793 is an apocalyptic number.

It is an amenable number.

164556793 is a deficient number, since it is larger than the sum of its proper divisors (136875).

164556793 is a wasteful number, since it uses less digits than its factorization.

164556793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136874.

The product of its digits is 680400, while the sum is 46.

The square root of 164556793 is about 12827.9691689683. The cubic root of 164556793 is about 547.9891230281.

The spelling of 164556793 in words is "one hundred sixty-four million, five hundred fifty-six thousand, seven hundred ninety-three".