164665375 has 16 divisors (see below), whose sum is σ = 234861120. Its totient is φ = 112912800.

The previous prime is 164665373. The next prime is 164665409. The reversal of 164665375 is 573566461.

It is not a de Polignac number, because 164665375 - 2¹ = 164665373 is a prime.

It is a super-2 number, since 2×164665375² = 54229371447781250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164665373) 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 15 ways as a sum of consecutive naturals, for example, 93220 + ... + 94969.

It is an arithmetic number, because the mean of its divisors is an integer number (14678820).

Almost surely, 2^164665375 is an apocalyptic number.

164665375 is a deficient number, since it is larger than the sum of its proper divisors (70195745).

164665375 is an equidigital number, since it uses as much as digits as its factorization.

164665375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188211 (or 188201 counting only the distinct ones).

The product of its digits is 453600, while the sum is 43.

The square root of 164665375 is about 12832.2007075949. The cubic root of 164665375 is about 548.1096258473.

The spelling of 164665375 in words is "one hundred sixty-four million, six hundred sixty-five thousand, three hundred seventy-five".