222656556 has 24 divisors (see below), whose sum is σ = 524132784. Its totient is φ = 73561600.

The previous prime is 222656549. The next prime is 222656557. The reversal of 222656556 is 655656222.

It is a super-2 number, since 2×222656556² = 99151883859562272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222656557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80745 + ... + 83456.

It is an arithmetic number, because the mean of its divisors is an integer number (21838866).

Almost surely, 2^222656556 is an apocalyptic number.

It is an amenable number.

222656556 is an abundant number, since it is smaller than the sum of its proper divisors (301476228).

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

222656556 is a wasteful number, since it uses less digits than its factorization.

222656556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164321 (or 164319 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

The square root of 222656556 is about 14921.6807364318. The cubic root of 222656556 is about 606.1012258879.

The spelling of 222656556 in words is "two hundred twenty-two million, six hundred fifty-six thousand, five hundred fifty-six".