56736865 has 4 divisors (see below), whose sum is σ = 68084244. Its totient is φ = 45389488.

The previous prime is 56736863. The next prime is 56736899. The reversal of 56736865 is 56863765.

It is a happy number.

56736865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 27447121 + 29289744 = 5239^2 + 5412^2 .

It is a cyclic number.

It is not a de Polignac number, because 56736865 - 2¹ = 56736863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56736863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5673682 + ... + 5673691.

It is an arithmetic number, because the mean of its divisors is an integer number (17021061).

Almost surely, 2^56736865 is an apocalyptic number.

It is an amenable number.

56736865 is a deficient number, since it is larger than the sum of its proper divisors (11347379).

56736865 is a wasteful number, since it uses less digits than its factorization.

56736865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11347378.

The product of its digits is 907200, while the sum is 46.

The square root of 56736865 is about 7532.3877356387. The cubic root of 56736865 is about 384.2569916890.

The spelling of 56736865 in words is "fifty-six million, seven hundred thirty-six thousand, eight hundred sixty-five".