86623559 has 8 divisors (see below), whose sum is σ = 95435280. Its totient is φ = 77968000.

The previous prime is 86623541. The next prime is 86623561. The reversal of 86623559 is 95532668.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86623559 - 2¹⁶ = 86558023 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 (86623519) 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 7 ways as a sum of consecutive naturals, for example, 37874 + ... + 40095.

It is an arithmetic number, because the mean of its divisors is an integer number (11929410).

Almost surely, 2^86623559 is an apocalyptic number.

86623559 is a deficient number, since it is larger than the sum of its proper divisors (8811721).

86623559 is a wasteful number, since it uses less digits than its factorization.

86623559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78081.

The product of its digits is 388800, while the sum is 44.

The square root of 86623559 is about 9307.1778214451. The cubic root of 86623559 is about 442.4647469974.

It can be divided in two parts, 8662 and 3559, that added together give a palindrome (12221).

The spelling of 86623559 in words is "eighty-six million, six hundred twenty-three thousand, five hundred fifty-nine".