84750087 has 4 divisors (see below), whose sum is σ = 113000120. Its totient is φ = 56500056.

The previous prime is 84750077. The next prime is 84750121. The reversal of 84750087 is 78005748.

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

It is not a de Polignac number, because 84750087 - 2⁶ = 84750023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84750047) 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, 14125012 + ... + 14125017.

It is an arithmetic number, because the mean of its divisors is an integer number (28250030).

Almost surely, 2^84750087 is an apocalyptic number.

84750087 is a deficient number, since it is larger than the sum of its proper divisors (28250033).

84750087 is a wasteful number, since it uses less digits than its factorization.

84750087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28250032.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 84750087 is about 9205.9810449512. The cubic root of 84750087 is about 439.2516324861.

The spelling of 84750087 in words is "eighty-four million, seven hundred fifty thousand, eighty-seven".