87513 has 8 divisors (see below), whose sum is σ = 120576. Its totient is φ = 56400.

The previous prime is 87511. The next prime is 87517. The reversal of 87513 is 31578.

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

It is not a de Polignac number, because 87513 - 2¹ = 87511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87511) 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, 378 + ... + 563.

It is an arithmetic number, because the mean of its divisors is an integer number (15072).

2⁸⁷⁵¹³ is an apocalyptic number.

It is an amenable number.

87513 is a deficient number, since it is larger than the sum of its proper divisors (33063).

87513 is a wasteful number, since it uses less digits than its factorization.

87513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975.

The product of its digits is 840, while the sum is 24.

The square root of 87513 is about 295.8259623495. The cubic root of 87513 is about 44.3973985977.

It can be divided in two parts, 875 and 13, that added together give a palindrome (888).

The spelling of 87513 in words is "eighty-seven thousand, five hundred thirteen".