91667075 has 12 divisors (see below), whose sum is σ = 118609968. Its totient is φ = 70144800.

The previous prime is 91667071. The next prime is 91667083. The reversal of 91667075 is 57076619.

It is not a de Polignac number, because 91667075 - 2² = 91667071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91667071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79136 + ... + 80285.

It is an arithmetic number, because the mean of its divisors is an integer number (9884164).

Almost surely, 2^91667075 is an apocalyptic number.

91667075 is a deficient number, since it is larger than the sum of its proper divisors (26942893).

91667075 is a wasteful number, since it uses less digits than its factorization.

91667075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159454 (or 159449 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 91667075 is about 9574.2924020525. The cubic root of 91667075 is about 450.8905410014.

The spelling of 91667075 in words is "ninety-one million, six hundred sixty-seven thousand, seventy-five".