6539983 has 2 divisors, whose sum is σ = 6539984. Its totient is φ = 6539982.

The previous prime is 6539963. The next prime is 6539989. The reversal of 6539983 is 3899356.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6539983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6539989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3269991 + 3269992.

It is an arithmetic number, because the mean of its divisors is an integer number (3269992).

Almost surely, 2^6539983 is an apocalyptic number.

6539983 is a deficient number, since it is larger than the sum of its proper divisors (1).

6539983 is an equidigital number, since it uses as much as digits as its factorization.

6539983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 43.

The square root of 6539983 is about 2557.3390467437. The cubic root of 6539983 is about 187.0074348612.

The spelling of 6539983 in words is "six million, five hundred thirty-nine thousand, nine hundred eighty-three".