6694489 has 4 divisors (see below), whose sum is σ = 6704356. Its totient is φ = 6684624.

The previous prime is 6694477. The next prime is 6694511. The reversal of 6694489 is 9844966.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6086089 + 608400 = 2467^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 6694489 - 2⁷ = 6694361 is a prime.

It is a super-2 number, since 2×6694489² = 89632365942242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6694409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3834 + ... + 5299.

It is an arithmetic number, because the mean of its divisors is an integer number (1676089).

Almost surely, 2^6694489 is an apocalyptic number.

It is an amenable number.

6694489 is a deficient number, since it is larger than the sum of its proper divisors (9867).

6694489 is an equidigital number, since it uses as much as digits as its factorization.

6694489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9866.

The product of its digits is 373248, while the sum is 46.

The square root of 6694489 is about 2587.3710595893. The cubic root of 6694489 is about 188.4686605794.

The spelling of 6694489 in words is "six million, six hundred ninety-four thousand, four hundred eighty-nine".