164722085 has 8 divisors (see below), whose sum is σ = 215636256. Its totient is φ = 119797840.

The previous prime is 164722081. The next prime is 164722111. The reversal of 164722085 is 580227461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164722085 - 2² = 164722081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164722081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1497419 + ... + 1497528.

It is an arithmetic number, because the mean of its divisors is an integer number (26954532).

Almost surely, 2^164722085 is an apocalyptic number.

It is an amenable number.

164722085 is a deficient number, since it is larger than the sum of its proper divisors (50914171).

164722085 is a wasteful number, since it uses less digits than its factorization.

164722085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994963.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 164722085 is about 12834.4101929150. The cubic root of 164722085 is about 548.1725407725.

It can be divided in two parts, 1647 and 22085, that added together give a palindrome (23732).

The spelling of 164722085 in words is "one hundred sixty-four million, seven hundred twenty-two thousand, eighty-five".