6281887656 has 32 divisors (see below), whose sum is σ = 17132421600. Its totient is φ = 1903602240.

The previous prime is 6281887637. The next prime is 6281887669. The reversal of 6281887656 is 6567881826.

It is a happy number.

It is a super-2 number, since 2×6281887656² = 78924225045210348672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6281887596 and 6281887605.

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, 11897251 + ... + 11897778.

It is an arithmetic number, because the mean of its divisors is an integer number (535388175).

Almost surely, 2^6281887656 is an apocalyptic number.

6281887656 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6281887656 is an abundant number, since it is smaller than the sum of its proper divisors (10850533944).

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

6281887656 is a wasteful number, since it uses less digits than its factorization.

6281887656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23795049 (or 23795045 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 57.

The square root of 6281887656 is about 79258.3601647170. The cubic root of 6281887656 is about 1845.1431068263.

The spelling of 6281887656 in words is "six billion, two hundred eighty-one million, eight hundred eighty-seven thousand, six hundred fifty-six".