220685859 has 6 divisors (see below), whose sum is σ = 318768476. Its totient is φ = 147123900.

The previous prime is 220685833. The next prime is 220685867. The reversal of 220685859 is 958586022.

220685859 is a `hidden beast` number, since 2 + 2 + 0 + 68 + 585 + 9 = 666.

220685859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220685859 - 2¹⁵ = 220653091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220685809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12260317 + ... + 12260334.

Almost surely, 2^220685859 is an apocalyptic number.

220685859 is a deficient number, since it is larger than the sum of its proper divisors (98082617).

220685859 is a wasteful number, since it uses less digits than its factorization.

220685859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24520657 (or 24520654 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 220685859 is about 14855.4992847767. The cubic root of 220685859 is about 604.3077563750.

The spelling of 220685859 in words is "two hundred twenty million, six hundred eighty-five thousand, eight hundred fifty-nine".