56321663 has 8 divisors (see below), whose sum is σ = 59758560. Its totient is φ = 52898560.

The previous prime is 56321647. The next prime is 56321693. The reversal of 56321663 is 36612365.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56321663 - 2⁴ = 56321647 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 (56321623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5678 + ... + 12036.

It is an arithmetic number, because the mean of its divisors is an integer number (7469820).

Almost surely, 2^56321663 is an apocalyptic number.

56321663 is a deficient number, since it is larger than the sum of its proper divisors (3436897).

56321663 is a wasteful number, since it uses less digits than its factorization.

56321663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6897.

The product of its digits is 19440, while the sum is 32.

The square root of 56321663 is about 7504.7760126469. The cubic root of 56321663 is about 383.3173613173.

The spelling of 56321663 in words is "fifty-six million, three hundred twenty-one thousand, six hundred sixty-three".