56806 has 4 divisors (see below), whose sum is σ = 85212. Its totient is φ = 28402.

The previous prime is 56783. The next prime is 56807. The reversal of 56806 is 60865.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56807) by changing a digit.

56806 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14200 + ... + 14203.

It is an arithmetic number, because the mean of its divisors is an integer number (21303).

2⁵⁶⁸⁰⁶ is an apocalyptic number.

56806 is a deficient number, since it is larger than the sum of its proper divisors (28406).

56806 is a wasteful number, since it uses less digits than its factorization.

56806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28405.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 56806 is about 238.3400931442. The cubic root of 56806 is about 38.4413003271.

The spelling of 56806 in words is "fifty-six thousand, eight hundred six".