6780296656 has 80 divisors (see below), whose sum is σ = 15321305088. Its totient is φ = 2846793600.

The previous prime is 6780296641. The next prime is 6780296659. The reversal of 6780296656 is 6566920876.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6780296597 and 6780296606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780296659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1293561 + ... + 1298791.

Almost surely, 2^6780296656 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 6780296656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7660652544).

6780296656 is an abundant number, since it is smaller than the sum of its proper divisors (8541008432).

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

6780296656 is a wasteful number, since it uses less digits than its factorization.

6780296656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480 (or 5474 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The square root of 6780296656 is about 82342.5567735178. The cubic root of 6780296656 is about 1892.7048657463.

The spelling of 6780296656 in words is "six billion, seven hundred eighty million, two hundred ninety-six thousand, six hundred fifty-six".