220554656 has 48 divisors (see below), whose sum is σ = 499939776. Its totient is φ = 93820416.

The previous prime is 220554629. The next prime is 220554661. The reversal of 220554656 is 656455022.

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, 27095 + ... + 34281.

It is an arithmetic number, because the mean of its divisors is an integer number (10415412).

Almost surely, 2^220554656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220554656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249969888).

220554656 is an abundant number, since it is smaller than the sum of its proper divisors (279385120).

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

220554656 is a wasteful number, since it uses less digits than its factorization.

220554656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7341 (or 7333 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 220554656 is about 14851.0826541367. The cubic root of 220554656 is about 604.1879741821.

The spelling of 220554656 in words is "two hundred twenty million, five hundred fifty-four thousand, six hundred fifty-six".