164720271 has 16 divisors (see below), whose sum is σ = 223816320. Its totient is φ = 107726880.

The previous prime is 164720219. The next prime is 164720287. The reversal of 164720271 is 172027461.

It is not a de Polignac number, because 164720271 - 2⁶ = 164720207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164720201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150436 + ... + 151526.

It is an arithmetic number, because the mean of its divisors is an integer number (13988520).

Almost surely, 2^164720271 is an apocalyptic number.

164720271 is a deficient number, since it is larger than the sum of its proper divisors (59096049).

164720271 is a wasteful number, since it uses less digits than its factorization.

164720271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 164720271 is about 12834.3395233257. The cubic root of 164720271 is about 548.1705285173.

The spelling of 164720271 in words is "one hundred sixty-four million, seven hundred twenty thousand, two hundred seventy-one".