56840663 has 4 divisors (see below), whose sum is σ = 62008008. Its totient is φ = 51673320.

The previous prime is 56840633. The next prime is 56840671. The reversal of 56840663 is 36604865.

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 56840663 - 2⁶ = 56840599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56840603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2583656 + ... + 2583677.

It is an arithmetic number, because the mean of its divisors is an integer number (15502002).

Almost surely, 2^56840663 is an apocalyptic number.

56840663 is a deficient number, since it is larger than the sum of its proper divisors (5167345).

56840663 is a wasteful number, since it uses less digits than its factorization.

56840663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5167344.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 56840663 is about 7539.2746998634. The cubic root of 56840663 is about 384.4911769296.

The spelling of 56840663 in words is "fifty-six million, eight hundred forty thousand, six hundred sixty-three".