2756620656 has 120 divisors (see below), whose sum is σ = 8187154560. Its totient is φ = 863964288.

The previous prime is 2756620639. The next prime is 2756620661. The reversal of 2756620656 is 6560266572.

2756620656 is a `hidden beast` number, since 2 + 7 + 566 + 20 + 65 + 6 = 666.

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, 188355 + ... + 202461.

It is an arithmetic number, because the mean of its divisors is an integer number (68226288).

Almost surely, 2^2756620656 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 2756620656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4093577280).

2756620656 is an abundant number, since it is smaller than the sum of its proper divisors (5430533904).

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

2756620656 is a wasteful number, since it uses less digits than its factorization.

2756620656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14203 (or 14194 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The square root of 2756620656 is about 52503.5299384718. The cubic root of 2756620656 is about 1402.1430878045.

The spelling of 2756620656 in words is "two billion, seven hundred fifty-six million, six hundred twenty thousand, six hundred fifty-six".