6894689 has 4 divisors (see below), whose sum is σ = 6902724. Its totient is φ = 6886656.

The previous prime is 6894649. The next prime is 6894697. The reversal of 6894689 is 9864986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9864986 = 2 ⋅4932493.

It can be written as a sum of positive squares in 2 ways, for example, as 6760000 + 134689 = 2600^2 + 367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6894689 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6894619) 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, 2552 + ... + 4505.

It is an arithmetic number, because the mean of its divisors is an integer number (1725681).

Almost surely, 2^6894689 is an apocalyptic number.

It is an amenable number.

6894689 is a deficient number, since it is larger than the sum of its proper divisors (8035).

6894689 is an equidigital number, since it uses as much as digits as its factorization.

6894689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8034.

The product of its digits is 746496, while the sum is 50.

The square root of 6894689 is about 2625.7739811339. The cubic root of 6894689 is about 190.3289684107.

The spelling of 6894689 in words is "six million, eight hundred ninety-four thousand, six hundred eighty-nine".