86566943 has 4 divisors (see below), whose sum is σ = 89552040. Its totient is φ = 83581848.

The previous prime is 86566933. The next prime is 86566957. The reversal of 86566943 is 34966568.

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 86566943 - 2²² = 82372639 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 (86566913) 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, 1492505 + ... + 1492562.

It is an arithmetic number, because the mean of its divisors is an integer number (22388010).

Almost surely, 2^86566943 is an apocalyptic number.

86566943 is a deficient number, since it is larger than the sum of its proper divisors (2985097).

86566943 is a wasteful number, since it uses less digits than its factorization.

86566943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985096.

The product of its digits is 933120, while the sum is 47.

The square root of 86566943 is about 9304.1358008146. The cubic root of 86566943 is about 442.3683296410.

The spelling of 86566943 in words is "eighty-six million, five hundred sixty-six thousand, nine hundred forty-three".