2056266866 has 12 divisors (see below), whose sum is σ = 3194429082. Its totient is φ = 992679744.

The previous prime is 2056266791. The next prime is 2056266881. The reversal of 2056266866 is 6686626502.

It can be written as a sum of positive squares in 3 ways, for example, as 1630463641 + 425803225 = 40379^2 + 20635^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2056266866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 609575 + ... + 612938.

Almost surely, 2^2056266866 is an apocalyptic number.

2056266866 is a deficient number, since it is larger than the sum of its proper divisors (1138162216).

2056266866 is a wasteful number, since it uses less digits than its factorization.

2056266866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222573 (or 1222544 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 47.

The square root of 2056266866 is about 45346.0788381972. The cubic root of 2056266866 is about 1271.6272496815.

The spelling of 2056266866 in words is "two billion, fifty-six million, two hundred sixty-six thousand, eight hundred sixty-six".