164564339 has 4 divisors (see below), whose sum is σ = 173225640. Its totient is φ = 155903040.

The previous prime is 164564321. The next prime is 164564359. The reversal of 164564339 is 933465461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 933465461 = 17 ⋅54909733.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164564339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164564296 and 164564305.

It is not an unprimeable number, because it can be changed into a prime (164564359) 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, 4330622 + ... + 4330659.

It is an arithmetic number, because the mean of its divisors is an integer number (43306410).

Almost surely, 2^164564339 is an apocalyptic number.

164564339 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

164564339 is a deficient number, since it is larger than the sum of its proper divisors (8661301).

164564339 is an equidigital number, since it uses as much as digits as its factorization.

164564339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8661300.

The product of its digits is 233280, while the sum is 41.

The square root of 164564339 is about 12828.2632885360. The cubic root of 164564339 is about 547.9974991894.

The spelling of 164564339 in words is "one hundred sixty-four million, five hundred sixty-four thousand, three hundred thirty-nine".