56664563 has 4 divisors (see below), whose sum is σ = 57870240. Its totient is φ = 55458888.

The previous prime is 56664557. The next prime is 56664577. The reversal of 56664563 is 36546665.

It is a happy number.

56664563 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 is a cyclic number.

It is not a de Polignac number, because 56664563 - 2⁶ = 56664499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56664563.

It is not an unprimeable number, because it can be changed into a prime (56664533) 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, 602768 + ... + 602861.

It is an arithmetic number, because the mean of its divisors is an integer number (14467560).

Almost surely, 2^56664563 is an apocalyptic number.

56664563 is a deficient number, since it is larger than the sum of its proper divisors (1205677).

56664563 is a wasteful number, since it uses less digits than its factorization.

56664563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205676.

The product of its digits is 388800, while the sum is 41.

The square root of 56664563 is about 7527.5867979054. The cubic root of 56664563 is about 384.0936977482.

The spelling of 56664563 in words is "fifty-six million, six hundred sixty-four thousand, five hundred sixty-three".