56786811 has 4 divisors (see below), whose sum is σ = 75715752. Its totient is φ = 37857872.

The previous prime is 56786803. The next prime is 56786827. The reversal of 56786811 is 11868765.

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

It is a cyclic number.

It is not a de Polignac number, because 56786811 - 2³ = 56786803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56786861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9464466 + ... + 9464471.

It is an arithmetic number, because the mean of its divisors is an integer number (18928938).

Almost surely, 2^56786811 is an apocalyptic number.

56786811 is a deficient number, since it is larger than the sum of its proper divisors (18928941).

56786811 is a wasteful number, since it uses less digits than its factorization.

56786811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18928940.

The product of its digits is 80640, while the sum is 42.

The square root of 56786811 is about 7535.7024224687. The cubic root of 56786811 is about 384.3697136427.

It can be divided in two parts, 567 and 86811, that added together give a palindrome (87378).

The spelling of 56786811 in words is "fifty-six million, seven hundred eighty-six thousand, eight hundred eleven".