6859613 has 4 divisors (see below), whose sum is σ = 6865788. Its totient is φ = 6853440.

The previous prime is 6859609. The next prime is 6859621. The reversal of 6859613 is 3169586.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5555449 + 1304164 = 2357^2 + 1142^2 .

It is a cyclic number.

It is not a de Polignac number, because 6859613 - 2² = 6859609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6859693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 908 + ... + 3813.

It is an arithmetic number, because the mean of its divisors is an integer number (1716447).

Almost surely, 2^6859613 is an apocalyptic number.

It is an amenable number.

6859613 is a deficient number, since it is larger than the sum of its proper divisors (6175).

6859613 is a wasteful number, since it uses less digits than its factorization.

6859613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6174.

The product of its digits is 38880, while the sum is 38.

The square root of 6859613 is about 2619.0862910565. The cubic root of 6859613 is about 190.0056600345.

The spelling of 6859613 in words is "six million, eight hundred fifty-nine thousand, six hundred thirteen".