6904789 has 2 divisors, whose sum is σ = 6904790. Its totient is φ = 6904788.

The previous prime is 6904763. The next prime is 6904801. The reversal of 6904789 is 9874096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6838225 + 66564 = 2615^2 + 258^2 .

It is a cyclic number.

It is not a de Polignac number, because 6904789 - 2⁵ = 6904757 is a prime.

It is a super-2 number, since 2×6904789² = 95352222269042, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6⁵ + 9² + 0 + 4 + 7⁵ + 8⁷ + 9⁷ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6901789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3452394 + 3452395.

It is an arithmetic number, because the mean of its divisors is an integer number (3452395).

Almost surely, 2^6904789 is an apocalyptic number.

It is an amenable number.

6904789 is a deficient number, since it is larger than the sum of its proper divisors (1).

6904789 is an equidigital number, since it uses as much as digits as its factorization.

6904789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 6904789 is about 2627.6965197678. The cubic root of 6904789 is about 190.4218604264.

The spelling of 6904789 in words is "six million, nine hundred four thousand, seven hundred eighty-nine".