220906860 has 24 divisors (see below), whose sum is σ = 618539376. Its totient is φ = 58908480.

The previous prime is 220906849. The next prime is 220906871. The reversal of 220906860 is 68609022.

220906860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220906849) and next prime (220906871).

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, 1840831 + ... + 1840950.

It is an arithmetic number, because the mean of its divisors is an integer number (25772474).

Almost surely, 2^220906860 is an apocalyptic number.

220906860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220906860 is an abundant number, since it is smaller than the sum of its proper divisors (397632516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220906860 is a wasteful number, since it uses less digits than its factorization.

220906860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681793 (or 3681791 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 220906860 is about 14862.9357799864. The cubic root of 220906860 is about 604.5094126460.

The spelling of 220906860 in words is "two hundred twenty million, nine hundred six thousand, eight hundred sixty".