164884805 has 8 divisors (see below), whose sum is σ = 198043800. Its totient is φ = 131786496.

The previous prime is 164884781. The next prime is 164884813. The reversal of 164884805 is 508488461.

It can be written as a sum of positive squares in 4 ways, for example, as 198916 + 164685889 = 446^2 + 12833^2 .

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 164884805 - 2¹⁰ = 164883781 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8960 + ... + 20249.

It is an arithmetic number, because the mean of its divisors is an integer number (24755475).

Almost surely, 2^164884805 is an apocalyptic number.

It is an amenable number.

164884805 is a deficient number, since it is larger than the sum of its proper divisors (33158995).

164884805 is a wasteful number, since it uses less digits than its factorization.

164884805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30343.

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 164884805 is about 12840.7478364774. The cubic root of 164884805 is about 548.3529846607.

The spelling of 164884805 in words is "one hundred sixty-four million, eight hundred eighty-four thousand, eight hundred five".