6244556636 has 12 divisors (see below), whose sum is σ = 10951682280. Its totient is φ = 3115504560.

The previous prime is 6244556623. The next prime is 6244556657. The reversal of 6244556636 is 6366554426.

It is a happy number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691366 + ... + 1695053.

It is an arithmetic number, because the mean of its divisors is an integer number (912640190).

Almost surely, 2^6244556636 is an apocalyptic number.

It is an amenable number.

6244556636 is a deficient number, since it is larger than the sum of its proper divisors (4707125644).

6244556636 is a wasteful number, since it uses less digits than its factorization.

6244556636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386884 (or 3386882 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 47.

The square root of 6244556636 is about 79022.5071482802. The cubic root of 6244556636 is about 1841.4808333456.

The spelling of 6244556636 in words is "six billion, two hundred forty-four million, five hundred fifty-six thousand, six hundred thirty-six".