6749643056 has 40 divisors (see below), whose sum is σ = 14129397744. Its totient is φ = 3105043200.

The previous prime is 6749643013. The next prime is 6749643067. The reversal of 6749643056 is 6503469476.

It is a junction number, because it is equal to n+sod(n) for n = 6749642995 and 6749643013.

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, 11006 + ... + 116706.

Almost surely, 2^6749643056 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 6749643056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7064698872).

6749643056 is an abundant number, since it is smaller than the sum of its proper divisors (7379754688).

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

6749643056 is a wasteful number, since it uses less digits than its factorization.

6749643056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106029 (or 106023 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 50.

The square root of 6749643056 is about 82156.2113050498. The cubic root of 6749643056 is about 1889.8482615692.

The spelling of 6749643056 in words is "six billion, seven hundred forty-nine million, six hundred forty-three thousand, fifty-six".