164123617 has 4 divisors (see below), whose sum is σ = 187569856. Its totient is φ = 140677380.

The previous prime is 164123591. The next prime is 164123639. The reversal of 164123617 is 716321461.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164123617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164123417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11723109 + ... + 11723122.

It is an arithmetic number, because the mean of its divisors is an integer number (46892464).

Almost surely, 2^164123617 is an apocalyptic number.

It is an amenable number.

164123617 is a deficient number, since it is larger than the sum of its proper divisors (23446239).

164123617 is an equidigital number, since it uses as much as digits as its factorization.

164123617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23446238.

The product of its digits is 6048, while the sum is 31.

The square root of 164123617 is about 12811.0739986935. The cubic root of 164123617 is about 547.5078619695.

The spelling of 164123617 in words is "one hundred sixty-four million, one hundred twenty-three thousand, six hundred seventeen".