2566690056 has 96 divisors (see below), whose sum is σ = 8411869440. Its totient is φ = 690200064.

The previous prime is 2566690019. The next prime is 2566690057. The reversal of 2566690056 is 6500966652.

It is a junction number, because it is equal to n+sod(n) for n = 2566689993 and 2566690020.

It is not an unprimeable number, because it can be changed into a prime (2566690057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141216 + ... + 158351.

It is an arithmetic number, because the mean of its divisors is an integer number (87623640).

Almost surely, 2^2566690056 is an apocalyptic number.

It is an amenable number.

2566690056 is an abundant number, since it is smaller than the sum of its proper divisors (5845179384).

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

2566690056 is a wasteful number, since it uses less digits than its factorization.

2566690056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299603 (or 299596 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 2566690056 is about 50662.5113471490. The cubic root of 2566690056 is about 1369.1713702614.

The spelling of 2566690056 in words is "two billion, five hundred sixty-six million, six hundred ninety thousand, fifty-six".