6396956556 has 24 divisors (see below), whose sum is σ = 15711823680. Its totient is φ = 2020091472.

The previous prime is 6396956539. The next prime is 6396956557. The reversal of 6396956556 is 6556596936.

It is a super-2 number, since 2×6396956556² = 81842106358702762272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6396956556.

It is not an unprimeable number, because it can be changed into a prime (6396956557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14028186 + ... + 14028641.

It is an arithmetic number, because the mean of its divisors is an integer number (654659320).

Almost surely, 2^6396956556 is an apocalyptic number.

It is an amenable number.

6396956556 is an abundant number, since it is smaller than the sum of its proper divisors (9314867124).

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

6396956556 is a wasteful number, since it uses less digits than its factorization.

6396956556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28056853 (or 28056851 counting only the distinct ones).

The product of its digits is 39366000, while the sum is 60.

The square root of 6396956556 is about 79980.9762130971. The cubic root of 6396956556 is about 1856.3411864556.

The spelling of 6396956556 in words is "six billion, three hundred ninety-six million, nine hundred fifty-six thousand, five hundred fifty-six".