91734961 has 2 divisors, whose sum is σ = 91734962. Its totient is φ = 91734960.

The previous prime is 91734959. The next prime is 91734989. The reversal of 91734961 is 16943719.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90611361 + 1123600 = 9519^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 91734961 - 2¹ = 91734959 is a prime.

Together with 91734959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (91734901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45867480 + 45867481.

It is an arithmetic number, because the mean of its divisors is an integer number (45867481).

Almost surely, 2^91734961 is an apocalyptic number.

It is an amenable number.

91734961 is a deficient number, since it is larger than the sum of its proper divisors (1).

91734961 is an equidigital number, since it uses as much as digits as its factorization.

91734961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 40.

The square root of 91734961 is about 9577.8369687524. The cubic root of 91734961 is about 451.0018190594.

The spelling of 91734961 in words is "ninety-one million, seven hundred thirty-four thousand, nine hundred sixty-one".