164660869 has 8 divisors (see below), whose sum is σ = 170840160. Its totient is φ = 158515056.

The previous prime is 164660801. The next prime is 164660893. The reversal of 164660869 is 968066461.

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 164660869 - 2⁹ = 164660357 is a prime.

It is a super-2 number, since 2×164660869² = 54226403559670322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164660269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1882 + ... + 18244.

It is an arithmetic number, because the mean of its divisors is an integer number (21355020).

Almost surely, 2^164660869 is an apocalyptic number.

It is an amenable number.

164660869 is a deficient number, since it is larger than the sum of its proper divisors (6179291).

164660869 is a wasteful number, since it uses less digits than its factorization.

164660869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16739.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 164660869 is about 12832.0251324567. The cubic root of 164660869 is about 548.1046262039.

The spelling of 164660869 in words is "one hundred sixty-four million, six hundred sixty thousand, eight hundred sixty-nine".