220668788 has 24 divisors (see below), whose sum is σ = 404592384. Its totient is φ = 105177600.

The previous prime is 220668787. The next prime is 220668803. The reversal of 220668788 is 887866022.

220668788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220668787) 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, 4973 + ... + 21588.

It is an arithmetic number, because the mean of its divisors is an integer number (16858016).

Almost surely, 2^220668788 is an apocalyptic number.

It is an amenable number.

220668788 is a deficient number, since it is larger than the sum of its proper divisors (183923596).

220668788 is a wasteful number, since it uses less digits than its factorization.

220668788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26663 (or 26661 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 220668788 is about 14854.9247052955. The cubic root of 220668788 is about 604.2921740388.

The spelling of 220668788 in words is "two hundred twenty million, six hundred sixty-eight thousand, seven hundred eighty-eight".