86621233 has 4 divisors (see below), whose sum is σ = 88733988. Its totient is φ = 84508480.

The previous prime is 86621219. The next prime is 86621237. The reversal of 86621233 is 33212668.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1557504 + 85063729 = 1248^2 + 9223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86621233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86621195 and 86621204.

It is not an unprimeable number, because it can be changed into a prime (86621237) 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, 1056316 + ... + 1056397.

It is an arithmetic number, because the mean of its divisors is an integer number (22183497).

Almost surely, 2^86621233 is an apocalyptic number.

It is an amenable number.

86621233 is a deficient number, since it is larger than the sum of its proper divisors (2112755).

86621233 is a wasteful number, since it uses less digits than its factorization.

86621233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112754.

The product of its digits is 10368, while the sum is 31.

The square root of 86621233 is about 9307.0528632860. The cubic root of 86621233 is about 442.4607866344.

The spelling of 86621233 in words is "eighty-six million, six hundred twenty-one thousand, two hundred thirty-three".