84515 has 4 divisors (see below), whose sum is σ = 101424. Its totient is φ = 67608.

The previous prime is 84509. The next prime is 84521. The reversal of 84515 is 51548.

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

It is an interprime number because it is at equal distance from previous prime (84509) and next prime (84521).

It is a cyclic number.

It is not a de Polignac number, because 84515 - 2⁴ = 84499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8447 + ... + 8456.

It is an arithmetic number, because the mean of its divisors is an integer number (25356).

2⁸⁴⁵¹⁵ is an apocalyptic number.

84515 is a deficient number, since it is larger than the sum of its proper divisors (16909).

84515 is a wasteful number, since it uses less digits than its factorization.

84515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16908.

The product of its digits is 800, while the sum is 23.

The square root of 84515 is about 290.7146367144. The cubic root of 84515 is about 43.8845111860.

The spelling of 84515 in words is "eighty-four thousand, five hundred fifteen".