91675693 has 2 divisors, whose sum is σ = 91675694. Its totient is φ = 91675692.

The previous prime is 91675691. The next prime is 91675729. The reversal of 91675693 is 39657619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89359209 + 2316484 = 9453^2 + 1522^2 .

It is a cyclic number.

It is not a de Polignac number, because 91675693 - 2¹ = 91675691 is a prime.

Together with 91675691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91675691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45837846 + 45837847.

It is an arithmetic number, because the mean of its divisors is an integer number (45837847).

Almost surely, 2^91675693 is an apocalyptic number.

It is an amenable number.

91675693 is a deficient number, since it is larger than the sum of its proper divisors (1).

91675693 is an equidigital number, since it uses as much as digits as its factorization.

91675693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 306180, while the sum is 46.

The square root of 91675693 is about 9574.7424508443. The cubic root of 91675693 is about 450.9046705854.

The spelling of 91675693 in words is "ninety-one million, six hundred seventy-five thousand, six hundred ninety-three".