579987 has 8 divisors (see below), whose sum is σ = 859280. Its totient is φ = 386640.

The previous prime is 579983. The next prime is 580001. The reversal of 579987 is 789975.

579987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 579987 - 2² = 579983 is a prime.

It is an Ulam number.

It is a Duffinian number.

579987 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (579983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10714 + ... + 10767.

It is an arithmetic number, because the mean of its divisors is an integer number (107410).

2⁵⁷⁹⁹⁸⁷ is an apocalyptic number.

579987 is a deficient number, since it is larger than the sum of its proper divisors (279293).

579987 is a wasteful number, since it uses less digits than its factorization.

579987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21490 (or 21484 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 579987 is about 761.5687756204. The cubic root of 579987 is about 83.3948860795.

It can be divided in two parts, 5799 and 87, that added together give a triangular number (5886 = T₁₀₈).

The spelling of 579987 in words is "five hundred seventy-nine thousand, nine hundred eighty-seven".