86161823 has 4 divisors (see below), whose sum is σ = 93994728. Its totient is φ = 78328920.

The previous prime is 86161807. The next prime is 86161843. The reversal of 86161823 is 32816168.

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 86161823 - 2⁴ = 86161807 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 (86161843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3916436 + ... + 3916457.

It is an arithmetic number, because the mean of its divisors is an integer number (23498682).

Almost surely, 2^86161823 is an apocalyptic number.

86161823 is a deficient number, since it is larger than the sum of its proper divisors (7832905).

86161823 is a wasteful number, since it uses less digits than its factorization.

86161823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7832904.

The product of its digits is 13824, while the sum is 35.

The square root of 86161823 is about 9282.3393064464. The cubic root of 86161823 is about 441.6771784057.

The spelling of 86161823 in words is "eighty-six million, one hundred sixty-one thousand, eight hundred twenty-three".