164313565 has 32 divisors (see below), whose sum is σ = 223423200. Its totient is φ = 115153920.

The previous prime is 164313557. The next prime is 164313571. The reversal of 164313565 is 565313461.

It can be written as a sum of positive squares in 16 ways, for example, as 143856036 + 20457529 = 11994^2 + 4523^2 .

It is not a de Polignac number, because 164313565 - 2³ = 164313557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164313565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114271 + ... + 115699.

It is an arithmetic number, because the mean of its divisors is an integer number (6981975).

Almost surely, 2^164313565 is an apocalyptic number.

It is an amenable number.

164313565 is a deficient number, since it is larger than the sum of its proper divisors (59109635).

164313565 is a wasteful number, since it uses less digits than its factorization.

164313565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537.

The product of its digits is 32400, while the sum is 34.

The square root of 164313565 is about 12818.4852849313. The cubic root of 164313565 is about 547.7189994248.

The spelling of 164313565 in words is "one hundred sixty-four million, three hundred thirteen thousand, five hundred sixty-five".