91696567 has 2 divisors, whose sum is σ = 91696568. Its totient is φ = 91696566.

The previous prime is 91696559. The next prime is 91696621. The reversal of 91696567 is 76569619.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91696567 - 2³ = 91696559 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91696567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91696547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45848283 + 45848284.

It is an arithmetic number, because the mean of its divisors is an integer number (45848284).

Almost surely, 2^91696567 is an apocalyptic number.

91696567 is a deficient number, since it is larger than the sum of its proper divisors (1).

91696567 is an equidigital number, since it uses as much as digits as its factorization.

91696567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 49.

The square root of 91696567 is about 9575.8324442317. The cubic root of 91696567 is about 450.9388907424.

The spelling of 91696567 in words is "ninety-one million, six hundred ninety-six thousand, five hundred sixty-seven".