220669844 has 6 divisors (see below), whose sum is σ = 386172234. Its totient is φ = 110334920.

The previous prime is 220669837. The next prime is 220669847. The reversal of 220669844 is 448966022.

220669844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 203347600 + 17322244 = 14260^2 + 4162^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220669847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27583727 + ... + 27583734.

It is an arithmetic number, because the mean of its divisors is an integer number (64362039).

Almost surely, 2^220669844 is an apocalyptic number.

It is an amenable number.

220669844 is a deficient number, since it is larger than the sum of its proper divisors (165502390).

220669844 is a wasteful number, since it uses less digits than its factorization.

220669844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55167465 (or 55167463 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 220669844 is about 14854.9602490212. The cubic root of 220669844 is about 604.2931379745.

The spelling of 220669844 in words is "two hundred twenty million, six hundred sixty-nine thousand, eight hundred forty-four".