84579 has 12 divisors (see below), whose sum is σ = 124488. Its totient is φ = 51040.

The previous prime is 84559. The next prime is 84589. The reversal of 84579 is 97548.

It is not a de Polignac number, because 84579 - 2⁹ = 84067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (84509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 247 + ... + 479.

It is an arithmetic number, because the mean of its divisors is an integer number (10374).

2⁸⁴⁵⁷⁹ is an apocalyptic number.

84579 is a deficient number, since it is larger than the sum of its proper divisors (39909).

84579 is a wasteful number, since it uses less digits than its factorization.

84579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 247 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 84579 is about 290.8246894609. The cubic root of 84579 is about 43.8955857490.

The spelling of 84579 in words is "eighty-four thousand, five hundred seventy-nine".