6655685843 has 4 divisors (see below), whose sum is σ = 6730468920. Its totient is φ = 6580902768.

The previous prime is 6655685819. The next prime is 6655685857. The reversal of 6655685843 is 3485865566.

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 6655685843 - 2¹⁸ = 6655423699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6655685243) 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, 37391405 + ... + 37391582.

It is an arithmetic number, because the mean of its divisors is an integer number (1682617230).

Almost surely, 2^6655685843 is an apocalyptic number.

6655685843 is a deficient number, since it is larger than the sum of its proper divisors (74783077).

6655685843 is an equidigital number, since it uses as much as digits as its factorization.

6655685843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74783076.

The product of its digits is 20736000, while the sum is 56.

The square root of 6655685843 is about 81582.3868429945. The cubic root of 6655685843 is about 1881.0381548291.

The spelling of 6655685843 in words is "six billion, six hundred fifty-five million, six hundred eighty-five thousand, eight hundred forty-three".