164564023 has 8 divisors (see below), whose sum is σ = 177529968. Its totient is φ = 151641984.

The previous prime is 164564021. The next prime is 164564041. The reversal of 164564023 is 320465461.

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

It is not a de Polignac number, because 164564023 - 2¹ = 164564021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164564021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2965 + ... + 18382.

It is an arithmetic number, because the mean of its divisors is an integer number (22191246).

Almost surely, 2^164564023 is an apocalyptic number.

164564023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

164564023 is a deficient number, since it is larger than the sum of its proper divisors (12965945).

164564023 is a wasteful number, since it uses less digits than its factorization.

164564023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21953.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 164564023 is about 12828.2509719759. The cubic root of 164564023 is about 547.9971484303.

The spelling of 164564023 in words is "one hundred sixty-four million, five hundred sixty-four thousand, twenty-three".