20575685 has 16 divisors (see below), whose sum is σ = 27748224. Its totient is φ = 14532672.

The previous prime is 20575679. The next prime is 20575691. The reversal of 20575685 is 58657502.

It is an interprime number because it is at equal distance from previous prime (20575679) and next prime (20575691).

It is a cyclic number.

It is not a de Polignac number, because 20575685 - 2⁴ = 20575669 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 15 ways as a sum of consecutive naturals, for example, 5387 + ... + 8376.

It is an arithmetic number, because the mean of its divisors is an integer number (1734264).

Almost surely, 2^20575685 is an apocalyptic number.

It is an amenable number.

20575685 is a deficient number, since it is larger than the sum of its proper divisors (7172539).

20575685 is a wasteful number, since it uses less digits than its factorization.

20575685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13804.

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 20575685 is about 4536.0428789860. The cubic root of 20575685 is about 274.0215808743.

The spelling of 20575685 in words is "twenty million, five hundred seventy-five thousand, six hundred eighty-five".