2656207859 has 2 divisors, whose sum is σ = 2656207860. Its totient is φ = 2656207858.

The previous prime is 2656207843. The next prime is 2656207861. The reversal of 2656207859 is 9587026562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2656207859 - 2⁴ = 2656207843 is a prime.

Together with 2656207861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2656207819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328103929 + 1328103930.

It is an arithmetic number, because the mean of its divisors is an integer number (1328103930).

Almost surely, 2^2656207859 is an apocalyptic number.

2656207859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656207859 is an equidigital number, since it uses as much as digits as its factorization.

2656207859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The square root of 2656207859 is about 51538.4114908483. The cubic root of 2656207859 is about 1384.9072403306.

The spelling of 2656207859 in words is "two billion, six hundred fifty-six million, two hundred seven thousand, eight hundred fifty-nine".