6656756976 has 120 divisors (see below), whose sum is σ = 19894143360. Its totient is φ = 2073254400.

The previous prime is 6656756959. The next prime is 6656756983. The reversal of 6656756976 is 6796576566.

It is a happy number.

6656756976 is a `hidden beast` number, since 6 + 6 + 5 + 67 + 569 + 7 + 6 = 666.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103746 + ... + 155166.

It is an arithmetic number, because the mean of its divisors is an integer number (165784528).

Almost surely, 2^6656756976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6656756976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9947071680).

6656756976 is an abundant number, since it is smaller than the sum of its proper divisors (13237386384).

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

6656756976 is a wasteful number, since it uses less digits than its factorization.

6656756976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51495 (or 51486 counting only the distinct ones).

The product of its digits is 85730400, while the sum is 63.

The square root of 6656756976 is about 81588.9513108239. The cubic root of 6656756976 is about 1881.1390577269.

The spelling of 6656756976 in words is "six billion, six hundred fifty-six million, seven hundred fifty-six thousand, nine hundred seventy-six".