6840086 has 16 divisors (see below), whose sum is σ = 11851920. Its totient is φ = 2926080.

The previous prime is 6840083. The next prime is 6840091. The reversal of 6840086 is 6800486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6840083) 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, 8771 + ... + 9518.

It is an arithmetic number, because the mean of its divisors is an integer number (740745).

Almost surely, 2^6840086 is an apocalyptic number.

6840086 is a deficient number, since it is larger than the sum of its proper divisors (5011834).

6840086 is a wasteful number, since it uses less digits than its factorization.

6840086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18319.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 6840086 is about 2615.3558075337. The cubic root of 6840086 is about 189.8251947176.

It can be divided in two parts, 68400 and 86, that added together give a palindrome (68486).

The spelling of 6840086 in words is "six million, eight hundred forty thousand, eighty-six".