220775636 has 18 divisors (see below), whose sum is σ = 391911450. Its totient is φ = 108823120.

The previous prime is 220775629. The next prime is 220775641. The reversal of 220775636 is 636577022.

It can be written as a sum of positive squares in only one way, i.e., 135582736 + 85192900 = 11644^2 + 9230^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220775636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14690 + ... + 25638.

Almost surely, 2^220775636 is an apocalyptic number.

It is an amenable number.

220775636 is a deficient number, since it is larger than the sum of its proper divisors (171135814).

220775636 is a wasteful number, since it uses less digits than its factorization.

220775636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11095 (or 11022 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 220775636 is about 14858.5206531471. The cubic root of 220775636 is about 604.3896912159.

The spelling of 220775636 in words is "two hundred twenty million, seven hundred seventy-five thousand, six hundred thirty-six".