56678317 has 2 divisors, whose sum is σ = 56678318. Its totient is φ = 56678316.

The previous prime is 56678309. The next prime is 56678327. The reversal of 56678317 is 71387665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40525956 + 16152361 = 6366^2 + 4019^2 .

It is a cyclic number.

It is not a de Polignac number, because 56678317 - 2³ = 56678309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56678327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28339158 + 28339159.

It is an arithmetic number, because the mean of its divisors is an integer number (28339159).

Almost surely, 2^56678317 is an apocalyptic number.

It is an amenable number.

56678317 is a deficient number, since it is larger than the sum of its proper divisors (1).

56678317 is an equidigital number, since it uses as much as digits as its factorization.

56678317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 43.

The square root of 56678317 is about 7528.5003154679. The cubic root of 56678317 is about 384.1247718273.

The spelling of 56678317 in words is "fifty-six million, six hundred seventy-eight thousand, three hundred seventeen".