6840073 has 2 divisors, whose sum is σ = 6840074. Its totient is φ = 6840072.

The previous prime is 6840061. The next prime is 6840083. The reversal of 6840073 is 3700486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5322249 + 1517824 = 2307^2 + 1232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6840073 is a prime.

It is not a weakly prime, because it can be changed into another prime (6840013) 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, 3420036 + 3420037.

It is an arithmetic number, because the mean of its divisors is an integer number (3420037).

Almost surely, 2^6840073 is an apocalyptic number.

It is an amenable number.

6840073 is a deficient number, since it is larger than the sum of its proper divisors (1).

6840073 is an equidigital number, since it uses as much as digits as its factorization.

6840073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 6840073 is about 2615.3533222110. The cubic root of 6840073 is about 189.8250744594.

The spelling of 6840073 in words is "six million, eight hundred forty thousand, seventy-three".