164860869 has 8 divisors (see below), whose sum is σ = 221085792. Its totient is φ = 109271600.

The previous prime is 164860867. The next prime is 164860879. The reversal of 164860869 is 968068461.

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

It is a cyclic number.

It is not a de Polignac number, because 164860869 - 2¹ = 164860867 is a prime.

It is a super-2 number, since 2×164860869² = 54358212254870322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164860867) 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, 158307 + ... + 159344.

It is an arithmetic number, because the mean of its divisors is an integer number (27635724).

Almost surely, 2^164860869 is an apocalyptic number.

It is an amenable number.

164860869 is a deficient number, since it is larger than the sum of its proper divisors (56224923).

164860869 is a wasteful number, since it uses less digits than its factorization.

164860869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317827.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 164860869 is about 12839.8157697064. The cubic root of 164860869 is about 548.3264489383.

The spelling of 164860869 in words is "one hundred sixty-four million, eight hundred sixty thousand, eight hundred sixty-nine".