91836806 has 4 divisors (see below), whose sum is σ = 137755212. Its totient is φ = 45918402.

The previous prime is 91836793. The next prime is 91836827. The reversal of 91836806 is 60863819.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 22959200 + ... + 22959203.

It is an arithmetic number, because the mean of its divisors is an integer number (34438803).

Almost surely, 2^91836806 is an apocalyptic number.

91836806 is a deficient number, since it is larger than the sum of its proper divisors (45918406).

91836806 is a wasteful number, since it uses less digits than its factorization.

91836806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45918405.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 91836806 is about 9583.1521953896. The cubic root of 91836806 is about 451.1686594588.

The spelling of 91836806 in words is "ninety-one million, eight hundred thirty-six thousand, eight hundred six".