91166694 has 8 divisors (see below), whose sum is σ = 182333400. Its totient is φ = 30388896.

The previous prime is 91166689. The next prime is 91166737. The reversal of 91166694 is 49666119.

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

91166694 is an admirable number.

It is a super-2 number, since 2×91166694² = 16622732189779272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7597219 + ... + 7597230.

It is an arithmetic number, because the mean of its divisors is an integer number (22791675).

Almost surely, 2^91166694 is an apocalyptic number.

91166694 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91166694 is a wasteful number, since it uses less digits than its factorization.

91166694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15194454.

The product of its digits is 69984, while the sum is 42.

The square root of 91166694 is about 9548.1251562807. The cubic root of 91166694 is about 450.0686216339.

The spelling of 91166694 in words is "ninety-one million, one hundred sixty-six thousand, six hundred ninety-four".