91668084 has 24 divisors (see below), whose sum is σ = 225150240. Its totient is φ = 28947744.

The previous prime is 91668079. The next prime is 91668089. The reversal of 91668084 is 48086619.

It is an interprime number because it is at equal distance from previous prime (91668079) and next prime (91668089).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91668089) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 200799 + ... + 201254.

It is an arithmetic number, because the mean of its divisors is an integer number (9381260).

Almost surely, 2^91668084 is an apocalyptic number.

It is an amenable number.

91668084 is an abundant number, since it is smaller than the sum of its proper divisors (133482156).

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

91668084 is a wasteful number, since it uses less digits than its factorization.

91668084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402079 (or 402077 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 91668084 is about 9574.3450950966. The cubic root of 91668084 is about 450.8921953463.

The spelling of 91668084 in words is "ninety-one million, six hundred sixty-eight thousand, eighty-four".