86870911 has 4 divisors (see below), whose sum is σ = 87098112. Its totient is φ = 86643712.

The previous prime is 86870909. The next prime is 86870933. The reversal of 86870911 is 11907868.

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 86870911 - 2¹ = 86870909 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86870981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113026 + ... + 113791.

It is an arithmetic number, because the mean of its divisors is an integer number (21774528).

Almost surely, 2^86870911 is an apocalyptic number.

86870911 is a deficient number, since it is larger than the sum of its proper divisors (227201).

86870911 is a wasteful number, since it uses less digits than its factorization.

86870911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227200.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 86870911 is about 9320.4565875283. The cubic root of 86870911 is about 442.8854967872.

The spelling of 86870911 in words is "eighty-six million, eight hundred seventy thousand, nine hundred eleven".