6671839 has 2 divisors, whose sum is σ = 6671840. Its totient is φ = 6671838.

The previous prime is 6671809. The next prime is 6671879. The reversal of 6671839 is 9381766.

6671839 = 1052² + 1053² + ... + 1057².

It is an a-pointer prime, because the next prime (6671879) can be obtained adding 6671839 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6671839 - 2¹³ = 6663647 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6671809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3335919 + 3335920.

It is an arithmetic number, because the mean of its divisors is an integer number (3335920).

Almost surely, 2^6671839 is an apocalyptic number.

6671839 is a deficient number, since it is larger than the sum of its proper divisors (1).

6671839 is an equidigital number, since it uses as much as digits as its factorization.

6671839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 6671839 is about 2582.9903213137. The cubic root of 6671839 is about 188.2558667140.

The spelling of 6671839 in words is "six million, six hundred seventy-one thousand, eight hundred thirty-nine".