91206067 has 2 divisors, whose sum is σ = 91206068. Its totient is φ = 91206066.

The previous prime is 91206047. The next prime is 91206083. The reversal of 91206067 is 76060219.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91206067 - 2¹⁹ = 90681779 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91206007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45603033 + 45603034.

It is an arithmetic number, because the mean of its divisors is an integer number (45603034).

Almost surely, 2^91206067 is an apocalyptic number.

91206067 is a deficient number, since it is larger than the sum of its proper divisors (1).

91206067 is an equidigital number, since it uses as much as digits as its factorization.

91206067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 91206067 is about 9550.1867521007. The cubic root of 91206067 is about 450.1334040694.

The spelling of 91206067 in words is "ninety-one million, two hundred six thousand, sixty-seven".