2666794056 has 32 divisors (see below), whose sum is σ = 6669536640. Its totient is φ = 888591168.

The previous prime is 2666794051. The next prime is 2666794079. The reversal of 2666794056 is 6504976662.

It is a happy number.

It is a super-2 number, since 2×2666794056² = 14223581074233862272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2666794051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47265 + ... + 86991.

It is an arithmetic number, because the mean of its divisors is an integer number (208423020).

Almost surely, 2^2666794056 is an apocalyptic number.

It is an amenable number.

2666794056 is an abundant number, since it is smaller than the sum of its proper divisors (4002742584).

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

2666794056 is a wasteful number, since it uses less digits than its factorization.

2666794056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42533 (or 42529 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The square root of 2666794056 is about 51641.0113766181. The cubic root of 2666794056 is about 1386.7446300573.

The spelling of 2666794056 in words is "two billion, six hundred sixty-six million, seven hundred ninety-four thousand, fifty-six".