164623727 has 4 divisors (see below), whose sum is σ = 165026640. Its totient is φ = 164220816.

The previous prime is 164623717. The next prime is 164623759. The reversal of 164623727 is 727326461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 727326461 = 359 ⋅2025979.

It is a cyclic number.

It is not a de Polignac number, because 164623727 - 2²⁶ = 97514863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164623717) 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, 200843 + ... + 201660.

It is an arithmetic number, because the mean of its divisors is an integer number (41256660).

Almost surely, 2^164623727 is an apocalyptic number.

164623727 is a deficient number, since it is larger than the sum of its proper divisors (402913).

164623727 is an equidigital number, since it uses as much as digits as its factorization.

164623727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402912.

The product of its digits is 84672, while the sum is 38.

The square root of 164623727 is about 12830.5778123980. The cubic root of 164623727 is about 548.0634117307.

The spelling of 164623727 in words is "one hundred sixty-four million, six hundred twenty-three thousand, seven hundred twenty-seven".