20164085 has 8 divisors (see below), whose sum is σ = 24294816. Its totient is φ = 16066000.

The previous prime is 20164063. The next prime is 20164093. The reversal of 20164085 is 58046102.

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

It is not a de Polignac number, because 20164085 - 2¹⁰ = 20163061 is a prime.

It is a Duffinian 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, 6779 + ... + 9288.

It is an arithmetic number, because the mean of its divisors is an integer number (3036852).

Almost surely, 2^20164085 is an apocalyptic number.

It is an amenable number.

20164085 is a deficient number, since it is larger than the sum of its proper divisors (4130731).

20164085 is a wasteful number, since it uses less digits than its factorization.

20164085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16323.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 20164085 is about 4490.4437419925. The cubic root of 20164085 is about 272.1820661455.

The spelling of 20164085 in words is "twenty million, one hundred sixty-four thousand, eighty-five".