84874987 has 4 divisors (see below), whose sum is σ = 85699120. Its totient is φ = 84050856.

The previous prime is 84874963. The next prime is 84875009. The reversal of 84874987 is 78947848.

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 84874987 - 2¹⁹ = 84350699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84874087) 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, 411912 + ... + 412117.

It is an arithmetic number, because the mean of its divisors is an integer number (21424780).

Almost surely, 2^84874987 is an apocalyptic number.

84874987 is a deficient number, since it is larger than the sum of its proper divisors (824133).

84874987 is a wasteful number, since it uses less digits than its factorization.

84874987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824132.

The product of its digits is 3612672, while the sum is 55.

The square root of 84874987 is about 9212.7621808012. The cubic root of 84874987 is about 439.4673081735.

The spelling of 84874987 in words is "eighty-four million, eight hundred seventy-four thousand, nine hundred eighty-seven".