2220556636 has 12 divisors (see below), whose sum is σ = 3976345912. Its totient is φ = 1084457808.

The previous prime is 2220556633. The next prime is 2220556649. The reversal of 2220556636 is 6366550222.

It is a junction number, because it is equal to n+sod(n) for n = 2220556595 and 2220556604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220556633) 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, 6454935 + ... + 6455278.

Almost surely, 2^2220556636 is an apocalyptic number.

It is an amenable number.

2220556636 is a deficient number, since it is larger than the sum of its proper divisors (1755789276).

2220556636 is a wasteful number, since it uses less digits than its factorization.

2220556636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12910260 (or 12910258 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 2220556636 is about 47122.7825579093. The cubic root of 2220556636 is about 1304.6297714214.

The spelling of 2220556636 in words is "two billion, two hundred twenty million, five hundred fifty-six thousand, six hundred thirty-six".