84724 has 12 divisors (see below), whose sum is σ = 151200. Its totient is φ = 41528.

The previous prime is 84719. The next prime is 84731. The reversal of 84724 is 42748.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57 + ... + 415.

It is an arithmetic number, because the mean of its divisors is an integer number (12600).

2⁸⁴⁷²⁴ is an apocalyptic number.

It is an amenable number.

84724 is a deficient number, since it is larger than the sum of its proper divisors (66476).

84724 is a wasteful number, since it uses less digits than its factorization.

84724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 420 counting only the distinct ones).

The product of its digits is 1792, while the sum is 25.

The square root of 84724 is about 291.0738737846. The cubic root of 84724 is about 43.9206559049.

It can be divided in two parts, 84 and 724, that added together give a palindrome (808).

The spelling of 84724 in words is "eighty-four thousand, seven hundred twenty-four".