56436689 has 2 divisors, whose sum is σ = 56436690. Its totient is φ = 56436688.

The previous prime is 56436673. The next prime is 56436701. The reversal of 56436689 is 98663465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47334400 + 9102289 = 6880^2 + 3017^2 .

It is a cyclic number.

It is not a de Polignac number, because 56436689 - 2⁴ = 56436673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56436619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28218344 + 28218345.

It is an arithmetic number, because the mean of its divisors is an integer number (28218345).

Almost surely, 2^56436689 is an apocalyptic number.

It is an amenable number.

56436689 is a deficient number, since it is larger than the sum of its proper divisors (1).

56436689 is an equidigital number, since it uses as much as digits as its factorization.

56436689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 47.

The square root of 56436689 is about 7512.4356236842. The cubic root of 56436689 is about 383.5781341615.

The spelling of 56436689 in words is "fifty-six million, four hundred thirty-six thousand, six hundred eighty-nine".