91675091 has 4 divisors (see below), whose sum is σ = 94632384. Its totient is φ = 88717800.

The previous prime is 91675063. The next prime is 91675093. The reversal of 91675091 is 19057619.

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

It is a cyclic number.

It is not a de Polignac number, because 91675091 - 2⁶ = 91675027 is a prime.

It is a super-3 number, since 3×91675091³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91675093) 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 3 ways as a sum of consecutive naturals, for example, 1478600 + ... + 1478661.

It is an arithmetic number, because the mean of its divisors is an integer number (23658096).

Almost surely, 2^91675091 is an apocalyptic number.

91675091 is a deficient number, since it is larger than the sum of its proper divisors (2957293).

91675091 is a wasteful number, since it uses less digits than its factorization.

91675091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957292.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 91675091 is about 9574.7110139158. The cubic root of 91675091 is about 450.9036836091.

The spelling of 91675091 in words is "ninety-one million, six hundred seventy-five thousand, ninety-one".