91132697 has 2 divisors, whose sum is σ = 91132698. Its totient is φ = 91132696.

The previous prime is 91132687. The next prime is 91132729. The reversal of 91132697 is 79623119.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67551961 + 23580736 = 8219^2 + 4856^2 .

It is a cyclic number.

It is not a de Polignac number, because 91132697 - 2⁴ = 91132681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91132697.

It is not a weakly prime, because it can be changed into another prime (91132637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45566348 + 45566349.

It is an arithmetic number, because the mean of its divisors is an integer number (45566349).

Almost surely, 2^91132697 is an apocalyptic number.

It is an amenable number.

91132697 is a deficient number, since it is larger than the sum of its proper divisors (1).

91132697 is an equidigital number, since it uses as much as digits as its factorization.

91132697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 38.

The square root of 91132697 is about 9546.3446931273. The cubic root of 91132697 is about 450.0126696021.

The spelling of 91132697 in words is "ninety-one million, one hundred thirty-two thousand, six hundred ninety-seven".