6539013 has 12 divisors (see below), whose sum is σ = 10171980. Its totient is φ = 4023936.

The previous prime is 6539003. The next prime is 6539023. The reversal of 6539013 is 3109356.

6539013 is a `hidden beast` number, since 653 + 9 + 0 + 1 + 3 = 666.

6539013 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6539003) and next prime (6539023).

It can be written as a sum of positive squares in 2 ways, for example, as 3448449 + 3090564 = 1857^2 + 1758^2 .

It is not a de Polignac number, because 6539013 - 2⁴ = 6538997 is a prime.

It is a Curzon number.

6539013 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6539003) 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 in 11 ways as a sum of consecutive naturals, for example, 27828 + ... + 28061.

It is an arithmetic number, because the mean of its divisors is an integer number (847665).

Almost surely, 2^6539013 is an apocalyptic number.

It is an amenable number.

6539013 is a deficient number, since it is larger than the sum of its proper divisors (3632967).

6539013 is a wasteful number, since it uses less digits than its factorization.

6539013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55908 (or 55905 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 6539013 is about 2557.1493894569. The cubic root of 6539013 is about 186.9981888545.

The spelling of 6539013 in words is "six million, five hundred thirty-nine thousand, thirteen".