20854685 has 8 divisors (see below), whose sum is σ = 26342880. Its totient is φ = 15805584.

The previous prime is 20854681. The next prime is 20854693. The reversal of 20854685 is 58645802.

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 20854685 - 2² = 20854681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20854681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109667 + ... + 109856.

It is an arithmetic number, because the mean of its divisors is an integer number (3292860).

Almost surely, 2^20854685 is an apocalyptic number.

It is an amenable number.

20854685 is a deficient number, since it is larger than the sum of its proper divisors (5488195).

20854685 is a wasteful number, since it uses less digits than its factorization.

20854685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219547.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 20854685 is about 4566.6930047902. The cubic root of 20854685 is about 275.2545741791.

The spelling of 20854685 in words is "twenty million, eight hundred fifty-four thousand, six hundred eighty-five".