5999861 has 16 divisors (see below), whose sum is σ = 7335936. Its totient is φ = 4790016.

The previous prime is 5999831. The next prime is 5999863. The reversal of 5999861 is 1689995.

5999861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5999861 - 2¹⁸ = 5737717 is a prime.

It is an Ulam number.

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 (5999863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14915 + ... + 15311.

It is an arithmetic number, because the mean of its divisors is an integer number (458496).

Almost surely, 2^5999861 is an apocalyptic number.

It is an amenable number.

5999861 is a deficient number, since it is larger than the sum of its proper divisors (1336075).

5999861 is a wasteful number, since it uses less digits than its factorization.

5999861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548.

The product of its digits is 174960, while the sum is 47.

The square root of 5999861 is about 2449.4613693627. The cubic root of 5999861 is about 181.7106560515.

The spelling of 5999861 in words is "five million, nine hundred ninety-nine thousand, eight hundred sixty-one".