6223621556 has 24 divisors (see below), whose sum is σ = 11190267816. Its totient is φ = 3026471040.

The previous prime is 6223621507. The next prime is 6223621567. The reversal of 6223621556 is 6551263226.

It can be written as a sum of positive squares in 4 ways, for example, as 1674119056 + 4549502500 = 40916^2 + 67450^2 .

It is a super-2 number, since 2×6223621556² = 77466930544615722272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430526 + ... + 444746.

It is an arithmetic number, because the mean of its divisors is an integer number (466261159).

Almost surely, 2^6223621556 is an apocalyptic number.

It is an amenable number.

6223621556 is a deficient number, since it is larger than the sum of its proper divisors (4966646260).

6223621556 is a wasteful number, since it uses less digits than its factorization.

6223621556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17219 (or 17217 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The square root of 6223621556 is about 78889.9331727439. The cubic root of 6223621556 is about 1839.4206544832.

The spelling of 6223621556 in words is "six billion, two hundred twenty-three million, six hundred twenty-one thousand, five hundred fifty-six".