87405 has 8 divisors (see below), whose sum is σ = 139872. Its totient is φ = 46608.

The previous prime is 87403. The next prime is 87407. The reversal of 87405 is 50478.

It is an interprime number because it is at equal distance from previous prime (87403) and next prime (87407).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87405 - 2¹ = 87403 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 87405.

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 in 7 ways as a sum of consecutive naturals, for example, 2899 + ... + 2928.

It is an arithmetic number, because the mean of its divisors is an integer number (17484).

2⁸⁷⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

87405 is a deficient number, since it is larger than the sum of its proper divisors (52467).

87405 is a wasteful number, since it uses less digits than its factorization.

87405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5835.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 87405 is about 295.6433662371. The cubic root of 87405 is about 44.3791274346.

The spelling of 87405 in words is "eighty-seven thousand, four hundred five".