164716881 has 24 divisors (see below), whose sum is σ = 257375520. Its totient is φ = 93425472.

The previous prime is 164716873. The next prime is 164716883. The reversal of 164716881 is 188617461.

It is not a de Polignac number, because 164716881 - 2³ = 164716873 is a prime.

It is a super-2 number, since 2×164716881² = 54263301772736322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164716883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16050 + ... + 24228.

It is an arithmetic number, because the mean of its divisors is an integer number (10723980).

Almost surely, 2^164716881 is an apocalyptic number.

It is an amenable number.

164716881 is a deficient number, since it is larger than the sum of its proper divisors (92658639).

164716881 is a wasteful number, since it uses less digits than its factorization.

164716881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8333 (or 8326 counting only the distinct ones).

The product of its digits is 64512, while the sum is 42.

The square root of 164716881 is about 12834.2074550788. The cubic root of 164716881 is about 548.1667679786.

It can be divided in two parts, 1647 and 16881, that added together give a triangular number (18528 = T₁₉₂).

The spelling of 164716881 in words is "one hundred sixty-four million, seven hundred sixteen thousand, eight hundred eighty-one".