91673117 has 2 divisors, whose sum is σ = 91673118. Its totient is φ = 91673116.

The previous prime is 91673111. The next prime is 91673123. The reversal of 91673117 is 71137619.

It is a balanced prime because it is at equal distance from previous prime (91673111) and next prime (91673123).

It can be written as a sum of positive squares in only one way, i.e., 53158681 + 38514436 = 7291^2 + 6206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91673117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91673111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45836558 + 45836559.

It is an arithmetic number, because the mean of its divisors is an integer number (45836559).

Almost surely, 2^91673117 is an apocalyptic number.

It is an amenable number.

91673117 is a deficient number, since it is larger than the sum of its proper divisors (1).

91673117 is an equidigital number, since it uses as much as digits as its factorization.

91673117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7938, while the sum is 35.

The square root of 91673117 is about 9574.6079293097. The cubic root of 91673117 is about 450.9004472147.

The spelling of 91673117 in words is "ninety-one million, six hundred seventy-three thousand, one hundred seventeen".