91836866 has 16 divisors (see below), whose sum is σ = 151115328. Its totient is φ = 41511600.

The previous prime is 91836859. The next prime is 91836887. The reversal of 91836866 is 66863819.

It is a self number, because there is not a number n which added to its sum of digits gives 91836866.

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 in 7 ways as a sum of consecutive naturals, for example, 7550 + ... + 15513.

It is an arithmetic number, because the mean of its divisors is an integer number (9444708).

Almost surely, 2^91836866 is an apocalyptic number.

91836866 is a deficient number, since it is larger than the sum of its proper divisors (59278462).

91836866 is a wasteful number, since it uses less digits than its factorization.

91836866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23257.

The product of its digits is 373248, while the sum is 47.

The square root of 91836866 is about 9583.1553258830. The cubic root of 91836866 is about 451.1687577132.

The spelling of 91836866 in words is "ninety-one million, eight hundred thirty-six thousand, eight hundred sixty-six".