87404 has 6 divisors (see below), whose sum is σ = 152964. Its totient is φ = 43700.

The previous prime is 87403. The next prime is 87407. The reversal of 87404 is 40478.

87404 = 101² + 102² + ... + 108².

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 87404.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 87404.

It is not an unprimeable number, because it can be changed into a prime (87403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10922 + ... + 10929.

It is an arithmetic number, because the mean of its divisors is an integer number (25494).

2⁸⁷⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

87404 is a deficient number, since it is larger than the sum of its proper divisors (65560).

87404 is a wasteful number, since it uses less digits than its factorization.

87404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21855 (or 21853 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 87404 is about 295.6416750054. The cubic root of 87404 is about 44.3789581869.

The spelling of 87404 in words is "eighty-seven thousand, four hundred four".