20036685 has 16 divisors (see below), whose sum is σ = 32538816. Its totient is φ = 10526208.

The previous prime is 20036677. The next prime is 20036689. The reversal of 20036685 is 58663002.

It is not a de Polignac number, because 20036685 - 2³ = 20036677 is a prime.

It is a super-3 number, since 3×20036685³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20036689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8964 + ... + 10973.

It is an arithmetic number, because the mean of its divisors is an integer number (2033676).

Almost surely, 2^20036685 is an apocalyptic number.

It is an amenable number.

20036685 is a deficient number, since it is larger than the sum of its proper divisors (12502131).

20036685 is a wasteful number, since it uses less digits than its factorization.

20036685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20012.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 20036685 is about 4476.2355836126. The cubic root of 20036685 is about 271.6076243067.

Adding to 20036685 its reverse (58663002), we get a palindrome (78699687).

The spelling of 20036685 in words is "twenty million, thirty-six thousand, six hundred eighty-five".