6904889 has 4 divisors (see below), whose sum is σ = 6916980. Its totient is φ = 6892800.

The previous prime is 6904883. The next prime is 6904901. The reversal of 6904889 is 9884096.

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 3736489 + 3168400 = 1933^2 + 1780^2 .

It is a cyclic number.

It is not a de Polignac number, because 6904889 - 2⁸ = 6904633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6904883) 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, 5144 + ... + 6345.

It is an arithmetic number, because the mean of its divisors is an integer number (1729245).

Almost surely, 2^6904889 is an apocalyptic number.

It is an amenable number.

6904889 is a deficient number, since it is larger than the sum of its proper divisors (12091).

6904889 is a wasteful number, since it uses less digits than its factorization.

6904889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12090.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 6904889 is about 2627.7155477715. The cubic root of 6904889 is about 190.4227796963.

The spelling of 6904889 in words is "six million, nine hundred four thousand, eight hundred eighty-nine".