164862681 has 16 divisors (see below), whose sum is σ = 232447488. Its totient is φ = 103766400.

The previous prime is 164862671. The next prime is 164862683. The reversal of 164862681 is 186268461.

It is not a de Polignac number, because 164862681 - 2⁷ = 164862553 is a prime.

It is a super-2 number, since 2×164862681² = 54359407173015522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164862683) 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, 17806 + ... + 25431.

It is an arithmetic number, because the mean of its divisors is an integer number (14527968).

Almost surely, 2^164862681 is an apocalyptic number.

It is an amenable number.

164862681 is a deficient number, since it is larger than the sum of its proper divisors (67584807).

164862681 is a wasteful number, since it uses less digits than its factorization.

164862681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43312.

The product of its digits is 110592, while the sum is 42.

The square root of 164862681 is about 12839.8863312726. The cubic root of 164862681 is about 548.3284578320.

The spelling of 164862681 in words is "one hundred sixty-four million, eight hundred sixty-two thousand, six hundred eighty-one".