86823818 has 8 divisors (see below), whose sum is σ = 130519620. Its totient is φ = 43317280.

The previous prime is 86823817. The next prime is 86823823. The reversal of 86823818 is 81832868.

It can be written as a sum of positive squares in 2 ways, for example, as 81126049 + 5697769 = 9007^2 + 2387^2 .

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

It is not an unprimeable number, because it can be changed into a prime (86823817) 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, 46163 + ... + 48006.

Almost surely, 2^86823818 is an apocalyptic number.

86823818 is a deficient number, since it is larger than the sum of its proper divisors (43695802).

86823818 is a wasteful number, since it uses less digits than its factorization.

86823818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94632.

The product of its digits is 147456, while the sum is 44.

The square root of 86823818 is about 9317.9299203203. The cubic root of 86823818 is about 442.8054524378.

The spelling of 86823818 in words is "eighty-six million, eight hundred twenty-three thousand, eight hundred eighteen".