2568056977 has 4 divisors (see below), whose sum is σ = 2570573236. Its totient is φ = 2565540720.

The previous prime is 2568056969. The next prime is 2568056983. The reversal of 2568056977 is 7796508652.

It is a Cunningham number, because it is equal to 50676²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1494904896 + 1073152081 = 38664^2 + 32759^2 .

It is a cyclic number.

It is not a de Polignac number, because 2568056977 - 2³ = 2568056969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2568056947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1256598 + ... + 1258639.

It is an arithmetic number, because the mean of its divisors is an integer number (642643309).

Almost surely, 2^2568056977 is an apocalyptic number.

It is an amenable number.

2568056977 is a deficient number, since it is larger than the sum of its proper divisors (2516259).

2568056977 is a wasteful number, since it uses less digits than its factorization.

2568056977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516258.

The product of its (nonzero) digits is 6350400, while the sum is 55.

The square root of 2568056977 is about 50676.0000098666. Note that the first 5 decimals coincide. The cubic root of 2568056977 is about 1369.4143832363.

The spelling of 2568056977 in words is "two billion, five hundred sixty-eight million, fifty-six thousand, nine hundred seventy-seven".