6859559 has 6 divisors (see below), whose sum is σ = 7979544. Its totient is φ = 5879580.

The previous prime is 6859547. The next prime is 6859561. The reversal of 6859559 is 9559586.

It is not a de Polignac number, because 6859559 - 2¹² = 6855463 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6859519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69947 + ... + 70044.

It is an arithmetic number, because the mean of its divisors is an integer number (1329924).

Almost surely, 2^6859559 is an apocalyptic number.

6859559 is a deficient number, since it is larger than the sum of its proper divisors (1119985).

6859559 is a wasteful number, since it uses less digits than its factorization.

6859559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140005 (or 139998 counting only the distinct ones).

The product of its digits is 486000, while the sum is 47.

The square root of 6859559 is about 2619.0759820975. The cubic root of 6859559 is about 190.0051614480.

The spelling of 6859559 in words is "six million, eight hundred fifty-nine thousand, five hundred fifty-nine".