87424 has 16 divisors (see below), whose sum is σ = 174420. Its totient is φ = 43648.

The previous prime is 87421. The next prime is 87427. The reversal of 87424 is 42478.

It is an interprime number because it is at equal distance from previous prime (87421) and next prime (87427).

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214 + ... + 469.

2⁸⁷⁴²⁴ is an apocalyptic number.

It is an amenable number.

87424 is a deficient number, since it is larger than the sum of its proper divisors (86996).

87424 is an equidigital number, since it uses as much as digits as its factorization.

87424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697 (or 685 counting only the distinct ones).

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

The square root of 87424 is about 295.6754978012. The cubic root of 87424 is about 44.3823428965.

It can be divided in two parts, 874 and 24, that added together give a palindrome (898).

The spelling of 87424 in words is "eighty-seven thousand, four hundred twenty-four".