164213684 has 12 divisors (see below), whose sum is σ = 288834084. Its totient is φ = 81689664.

The previous prime is 164213683. The next prime is 164213729. The reversal of 164213684 is 486312461.

It can be written as a sum of positive squares in 2 ways, for example, as 143328784 + 20884900 = 11972^2 + 4570^2 .

It is a super-2 number, since 2×164213684² = 53932268025703712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164213681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103409 + ... + 104984.

It is an arithmetic number, because the mean of its divisors is an integer number (24069507).

Almost surely, 2^164213684 is an apocalyptic number.

It is an amenable number.

164213684 is a deficient number, since it is larger than the sum of its proper divisors (124620400).

164213684 is a wasteful number, since it uses less digits than its factorization.

164213684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208594 (or 208592 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 164213684 is about 12814.5887175516. The cubic root of 164213684 is about 547.6079965993.

The spelling of 164213684 in words is "one hundred sixty-four million, two hundred thirteen thousand, six hundred eighty-four".