84700487 has 4 divisors (see below), whose sum is σ = 84730296. Its totient is φ = 84670680.

The previous prime is 84700481. The next prime is 84700489. The reversal of 84700487 is 78400748.

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 84700487 - 2¹⁰ = 84699463 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 84700487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84700481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10133 + ... + 16494.

It is an arithmetic number, because the mean of its divisors is an integer number (21182574).

Almost surely, 2^84700487 is an apocalyptic number.

84700487 is a deficient number, since it is larger than the sum of its proper divisors (29809).

84700487 is a wasteful number, since it uses less digits than its factorization.

84700487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29808.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 84700487 is about 9203.2867498519. The cubic root of 84700487 is about 439.1659250712.

The spelling of 84700487 in words is "eighty-four million, seven hundred thousand, four hundred eighty-seven".