91356677 has 2 divisors, whose sum is σ = 91356678. Its totient is φ = 91356676.

The previous prime is 91356647. The next prime is 91356679. The reversal of 91356677 is 77665319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49547521 + 41809156 = 7039^2 + 6466^2 .

It is a cyclic number.

It is not a de Polignac number, because 91356677 - 2¹⁰ = 91355653 is a prime.

Together with 91356679, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91356679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45678338 + 45678339.

It is an arithmetic number, because the mean of its divisors is an integer number (45678339).

Almost surely, 2^91356677 is an apocalyptic number.

It is an amenable number.

91356677 is a deficient number, since it is larger than the sum of its proper divisors (1).

91356677 is an equidigital number, since it uses as much as digits as its factorization.

91356677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 44.

The square root of 91356677 is about 9558.0686856708. The cubic root of 91356677 is about 450.3810385805.

The spelling of 91356677 in words is "ninety-one million, three hundred fifty-six thousand, six hundred seventy-seven".