6890437 has 2 divisors, whose sum is σ = 6890438. Its totient is φ = 6890436.

The previous prime is 6890413. The next prime is 6890447. The reversal of 6890437 is 7340986.

6890437 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6482116 + 408321 = 2546^2 + 639^2 .

It is a cyclic number.

It is not a de Polignac number, because 6890437 - 2⁷ = 6890309 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6890396 and 6890405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6890447) 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 as a sum of consecutive naturals, namely, 3445218 + 3445219.

It is an arithmetic number, because the mean of its divisors is an integer number (3445219).

Almost surely, 2^6890437 is an apocalyptic number.

It is an amenable number.

6890437 is a deficient number, since it is larger than the sum of its proper divisors (1).

6890437 is an equidigital number, since it uses as much as digits as its factorization.

6890437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 6890437 is about 2624.9641902319. The cubic root of 6890437 is about 190.2898346565.

The spelling of 6890437 in words is "six million, eight hundred ninety thousand, four hundred thirty-seven".