164772170 has 8 divisors (see below), whose sum is σ = 296589924. Its totient is φ = 65908864.

The previous prime is 164772151. The next prime is 164772203. The reversal of 164772170 is 71277461.

It can be written as a sum of positive squares in 2 ways, for example, as 148035889 + 16736281 = 12167^2 + 4091^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 164772170.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8238599 + ... + 8238618.

Almost surely, 2^164772170 is an apocalyptic number.

164772170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164772170 is a deficient number, since it is larger than the sum of its proper divisors (131817754).

164772170 is a wasteful number, since it uses less digits than its factorization.

164772170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16477224.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 164772170 is about 12836.3612445272. The cubic root of 164772170 is about 548.2280938161.

The spelling of 164772170 in words is "one hundred sixty-four million, seven hundred seventy-two thousand, one hundred seventy".