56442663 has 10 divisors (see below), whose sum is σ = 84315704. Its totient is φ = 37628388.

The previous prime is 56442653. The next prime is 56442679. The reversal of 56442663 is 36624465.

56442663 is a `hidden beast` number, since 5 + 644 + 2 + 6 + 6 + 3 = 666.

It is not a de Polignac number, because 56442663 - 2⁴ = 56442647 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 (56442623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 348331 + ... + 348492.

Almost surely, 2^56442663 is an apocalyptic number.

56442663 is a deficient number, since it is larger than the sum of its proper divisors (27873041).

56442663 is an equidigital number, since it uses as much as digits as its factorization.

56442663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696835 (or 696826 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 56442663 is about 7512.8332205633. The cubic root of 56442663 is about 383.5916679989.

The spelling of 56442663 in words is "fifty-six million, four hundred forty-two thousand, six hundred sixty-three".