56679877 has 2 divisors, whose sum is σ = 56679878. Its totient is φ = 56679876.

The previous prime is 56679871. The next prime is 56679899. The reversal of 56679877 is 77897665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56160036 + 519841 = 7494^2 + 721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56679877 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56679871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28339938 + 28339939.

It is an arithmetic number, because the mean of its divisors is an integer number (28339939).

Almost surely, 2^56679877 is an apocalyptic number.

It is an amenable number.

56679877 is a deficient number, since it is larger than the sum of its proper divisors (1).

56679877 is an equidigital number, since it uses as much as digits as its factorization.

56679877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4445280, while the sum is 55.

The square root of 56679877 is about 7528.6039210467. The cubic root of 56679877 is about 384.1282959801.

The spelling of 56679877 in words is "fifty-six million, six hundred seventy-nine thousand, eight hundred seventy-seven".