220868986 has 32 divisors (see below), whose sum is σ = 372556800. Its totient is φ = 97511040.

The previous prime is 220868971. The next prime is 220868987. The reversal of 220868986 is 689868022.

220868986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (220868987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70195 + ... + 73273.

It is an arithmetic number, because the mean of its divisors is an integer number (11642400).

Almost surely, 2^220868986 is an apocalyptic number.

220868986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

220868986 is a deficient number, since it is larger than the sum of its proper divisors (151687814).

220868986 is a wasteful number, since it uses less digits than its factorization.

220868986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3214.

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 220868986 is about 14861.6616163873. The cubic root of 220868986 is about 604.4748633974.

The spelling of 220868986 in words is "two hundred twenty million, eight hundred sixty-eight thousand, nine hundred eighty-six".