91675783 has 2 divisors, whose sum is σ = 91675784. Its totient is φ = 91675782.

The previous prime is 91675739. The next prime is 91675789. The reversal of 91675783 is 38757619.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91675783 - 2²¹ = 89578631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91675789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45837891 + 45837892.

It is an arithmetic number, because the mean of its divisors is an integer number (45837892).

Almost surely, 2^91675783 is an apocalyptic number.

91675783 is a deficient number, since it is larger than the sum of its proper divisors (1).

91675783 is an equidigital number, since it uses as much as digits as its factorization.

91675783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 46.

The square root of 91675783 is about 9574.7471507085. The cubic root of 91675783 is about 450.9048181396.

The spelling of 91675783 in words is "ninety-one million, six hundred seventy-five thousand, seven hundred eighty-three".