6682691 has 4 divisors (see below), whose sum is σ = 6689112. Its totient is φ = 6676272.

The previous prime is 6682609. The next prime is 6682693. The reversal of 6682691 is 1962866.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6682691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6682693) 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, 1250 + ... + 3863.

It is an arithmetic number, because the mean of its divisors is an integer number (1672278).

Almost surely, 2^6682691 is an apocalyptic number.

6682691 is a deficient number, since it is larger than the sum of its proper divisors (6421).

6682691 is a wasteful number, since it uses less digits than its factorization.

6682691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6420.

The product of its digits is 31104, while the sum is 38.

The square root of 6682691 is about 2585.0901338251. The cubic root of 6682691 is about 188.3578798681.

The spelling of 6682691 in words is "six million, six hundred eighty-two thousand, six hundred ninety-one".