87619 has 4 divisors (see below), whose sum is σ = 100144. Its totient is φ = 75096.

The previous prime is 87613. The next prime is 87623. The reversal of 87619 is 91678.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87619 - 2⁵ = 87587 is a prime.

It is a super-2 number, since 2×87619² = 15354178322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6252 + ... + 6265.

It is an arithmetic number, because the mean of its divisors is an integer number (25036).

2⁸⁷⁶¹⁹ is an apocalyptic number.

87619 is a deficient number, since it is larger than the sum of its proper divisors (12525).

87619 is a wasteful number, since it uses less digits than its factorization.

87619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12524.

The product of its digits is 3024, while the sum is 31.

The square root of 87619 is about 296.0050675242. The cubic root of 87619 is about 44.4153167943.

The spelling of 87619 in words is "eighty-seven thousand, six hundred nineteen".