84975187 has 4 divisors (see below), whose sum is σ = 92700216. Its totient is φ = 77250160.

The previous prime is 84975173. The next prime is 84975223. The reversal of 84975187 is 78157948.

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

It is a cyclic number.

It is not a de Polignac number, because 84975187 - 2¹⁵ = 84942419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84975187.

It is not an unprimeable number, because it can be changed into a prime (84975167) 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, 3862498 + ... + 3862519.

It is an arithmetic number, because the mean of its divisors is an integer number (23175054).

Almost surely, 2^84975187 is an apocalyptic number.

84975187 is a deficient number, since it is larger than the sum of its proper divisors (7725029).

84975187 is a wasteful number, since it uses less digits than its factorization.

84975187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7725028.

The product of its digits is 564480, while the sum is 49.

The square root of 84975187 is about 9218.1986852096. The cubic root of 84975187 is about 439.6401793130.

The spelling of 84975187 in words is "eighty-four million, nine hundred seventy-five thousand, one hundred eighty-seven".