91365727 has 2 divisors, whose sum is σ = 91365728. Its totient is φ = 91365726.

The previous prime is 91365719. The next prime is 91365749. The reversal of 91365727 is 72756319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91365727 - 2³ = 91365719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91365727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91365707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45682863 + 45682864.

It is an arithmetic number, because the mean of its divisors is an integer number (45682864).

Almost surely, 2^91365727 is an apocalyptic number.

91365727 is a deficient number, since it is larger than the sum of its proper divisors (1).

91365727 is an equidigital number, since it uses as much as digits as its factorization.

91365727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 40.

The square root of 91365727 is about 9558.5420959475. The cubic root of 91365727 is about 450.3959100124.

The spelling of 91365727 in words is "ninety-one million, three hundred sixty-five thousand, seven hundred twenty-seven".