6686897 has 4 divisors (see below), whose sum is σ = 7642176. Its totient is φ = 5731620.

The previous prime is 6686893. The next prime is 6686909. The reversal of 6686897 is 7986866.

6686897 is digitally balanced in base 3, 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6686897 - 2² = 6686893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6686893) 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, 477629 + ... + 477642.

It is an arithmetic number, because the mean of its divisors is an integer number (1910544).

Almost surely, 2^6686897 is an apocalyptic number.

It is an amenable number.

6686897 is a deficient number, since it is larger than the sum of its proper divisors (955279).

6686897 is an equidigital number, since it uses as much as digits as its factorization.

6686897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955278.

The product of its digits is 870912, while the sum is 50.

The square root of 6686897 is about 2585.9035171483. The cubic root of 6686897 is about 188.3973882584.

The spelling of 6686897 in words is "six million, six hundred eighty-six thousand, eight hundred ninety-seven".