20364685 has 16 divisors (see below), whose sum is σ = 26749440. Its totient is φ = 14760640.

The previous prime is 20364661. The next prime is 20364697. The reversal of 20364685 is 58646302.

It is a happy number.

It is not a de Polignac number, because 20364685 - 2⁵ = 20364653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20364685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25959 + ... + 26731.

It is an arithmetic number, because the mean of its divisors is an integer number (1671840).

Almost surely, 2^20364685 is an apocalyptic number.

It is an amenable number.

20364685 is a deficient number, since it is larger than the sum of its proper divisors (6384755).

20364685 is a wasteful number, since it uses less digits than its factorization.

20364685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 20364685 is about 4512.7247866450. The cubic root of 20364685 is about 273.0816797731.

The spelling of 20364685 in words is "twenty million, three hundred sixty-four thousand, six hundred eighty-five".