20854585 has 8 divisors (see below), whose sum is σ = 25122240. Its totient is φ = 16619184.

The previous prime is 20854577. The next prime is 20854601. The reversal of 20854585 is 58545802.

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 20854585 - 2³ = 20854577 is a prime.

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, 6615 + ... + 9244.

It is an arithmetic number, because the mean of its divisors is an integer number (3140280).

Almost surely, 2^20854585 is an apocalyptic number.

It is an amenable number.

20854585 is a deficient number, since it is larger than the sum of its proper divisors (4267655).

20854585 is a wasteful number, since it uses less digits than its factorization.

20854585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16127.

The product of its (nonzero) digits is 64000, while the sum is 37.

The square root of 20854585 is about 4566.6820559351. The cubic root of 20854585 is about 275.2541342220.

It can be divided in two parts, 2085 and 4585, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 20854585 in words is "twenty million, eight hundred fifty-four thousand, five hundred eighty-five".