56773687 has 4 divisors (see below), whose sum is σ = 56983456. Its totient is φ = 56563920.

The previous prime is 56773669. The next prime is 56773709. The reversal of 56773687 is 78637765.

56773687 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 a de Polignac number, because none of the positive numbers 2^k-56773687 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 56773687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56773667) 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, 104478 + ... + 105019.

It is an arithmetic number, because the mean of its divisors is an integer number (14245864).

Almost surely, 2^56773687 is an apocalyptic number.

56773687 is a deficient number, since it is larger than the sum of its proper divisors (209769).

56773687 is a wasteful number, since it uses less digits than its factorization.

56773687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209768.

The product of its digits is 1481760, while the sum is 49.

The square root of 56773687 is about 7534.8315840502. The cubic root of 56773687 is about 384.3401007995.

The spelling of 56773687 in words is "fifty-six million, seven hundred seventy-three thousand, six hundred eighty-seven".