164612285 has 4 divisors (see below), whose sum is σ = 197534748. Its totient is φ = 131689824.

The previous prime is 164612281. The next prime is 164612291. The reversal of 164612285 is 582216461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32684089 + 131928196 = 5717^2 + 11486^2 .

It is a cyclic number.

It is not a de Polignac number, because 164612285 - 2² = 164612281 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 (164612281) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 16461224 + ... + 16461233.

It is an arithmetic number, because the mean of its divisors is an integer number (49383687).

Almost surely, 2^164612285 is an apocalyptic number.

It is an amenable number.

164612285 is a deficient number, since it is larger than the sum of its proper divisors (32922463).

164612285 is an equidigital number, since it uses as much as digits as its factorization.

164612285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32922462.

The product of its digits is 23040, while the sum is 35.

The square root of 164612285 is about 12830.1319167030. The cubic root of 164612285 is about 548.0507139118.

It can be divided in two parts, 1646 and 12285, that added together give a palindrome (13931).

The spelling of 164612285 in words is "one hundred sixty-four million, six hundred twelve thousand, two hundred eighty-five".