220266644 has 12 divisors (see below), whose sum is σ = 415118004. Its totient is φ = 101661504.

The previous prime is 220266643. The next prime is 220266659. The reversal of 220266644 is 446662022.

It can be written as a sum of positive squares in 2 ways, for example, as 121264144 + 99002500 = 11012^2 + 9950^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220266644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220266643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2117897 + ... + 2118000.

It is an arithmetic number, because the mean of its divisors is an integer number (34593167).

Almost surely, 2^220266644 is an apocalyptic number.

It is an amenable number.

220266644 is a deficient number, since it is larger than the sum of its proper divisors (194851360).

220266644 is a wasteful number, since it uses less digits than its factorization.

220266644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4235914 (or 4235912 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 220266644 is about 14841.3828196701. The cubic root of 220266644 is about 603.9248660251.

The spelling of 220266644 in words is "two hundred twenty million, two hundred sixty-six thousand, six hundred forty-four".