6427006856 has 16 divisors (see below), whose sum is σ = 12376331340. Its totient is φ = 3126651840.

The previous prime is 6427006841. The next prime is 6427006879. The reversal of 6427006856 is 6586007246.

It can be written as a sum of positive squares in 2 ways, for example, as 6123062500 + 303944356 = 78250^2 + 17434^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10856135 + ... + 10856726.

Almost surely, 2^6427006856 is an apocalyptic number.

It is an amenable number.

6427006856 is a deficient number, since it is larger than the sum of its proper divisors (5949324484).

6427006856 is a wasteful number, since it uses less digits than its factorization.

6427006856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21712904 (or 21712900 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 6427006856 is about 80168.6151558077. The cubic root of 6427006856 is about 1859.2434252911.

The spelling of 6427006856 in words is "six billion, four hundred twenty-seven million, six thousand, eight hundred fifty-six".