6840497 has 2 divisors, whose sum is σ = 6840498. Its totient is φ = 6840496.

The previous prime is 6840473. The next prime is 6840527. The reversal of 6840497 is 7940486.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3964081 + 2876416 = 1991^2 + 1696^2 .

It is a cyclic number.

It is not a de Polignac number, because 6840497 - 2⁸ = 6840241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6840497.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6840797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3420248 + 3420249.

It is an arithmetic number, because the mean of its divisors is an integer number (3420249).

Almost surely, 2^6840497 is an apocalyptic number.

It is an amenable number.

6840497 is a deficient number, since it is larger than the sum of its proper divisors (1).

6840497 is an equidigital number, since it uses as much as digits as its factorization.

6840497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 6840497 is about 2615.4343807483. The cubic root of 6840497 is about 189.8289966480.

It can be divided in two parts, 6840 and 497, that added together give a palindrome (7337).

The spelling of 6840497 in words is "six million, eight hundred forty thousand, four hundred ninety-seven".