56638783 has 8 divisors (see below), whose sum is σ = 58256000. Its totient is φ = 55035288.

The previous prime is 56638763. The next prime is 56638793. The reversal of 56638783 is 38783665.

56638783 is nontrivially palindromic in base 9.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56638783 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 (56638723) 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, 5248 + ... + 11866.

It is an arithmetic number, because the mean of its divisors is an integer number (7282000).

Almost surely, 2^56638783 is an apocalyptic number.

56638783 is a deficient number, since it is larger than the sum of its proper divisors (1617217).

56638783 is a wasteful number, since it uses less digits than its factorization.

56638783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6861.

The product of its digits is 725760, while the sum is 46.

The square root of 56638783 is about 7525.8742349311. The cubic root of 56638783 is about 384.0354400704.

The spelling of 56638783 in words is "fifty-six million, six hundred thirty-eight thousand, seven hundred eighty-three".