164544065 has 32 divisors (see below), whose sum is σ = 232346880. Its totient is φ = 109534464.

The previous prime is 164544043. The next prime is 164544067. The reversal of 164544065 is 560445461.

It is not a de Polignac number, because 164544065 - 2⁸ = 164543809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164544067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198071 + ... + 198899.

It is an arithmetic number, because the mean of its divisors is an integer number (7260840).

Almost surely, 2^164544065 is an apocalyptic number.

It is an amenable number.

164544065 is a deficient number, since it is larger than the sum of its proper divisors (67802815).

164544065 is a wasteful number, since it uses less digits than its factorization.

164544065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 164544065 is about 12827.4730559062. The cubic root of 164544065 is about 547.9749941970.

The spelling of 164544065 in words is "one hundred sixty-four million, five hundred forty-four thousand, sixty-five".