91706000497 has 2 divisors, whose sum is σ = 91706000498. Its totient is φ = 91706000496.

The previous prime is 91706000483. The next prime is 91706000513. The reversal of 91706000497 is 79400060719.

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., 47525744016 + 44180256481 = 218004^2 + 210191^2 .

It is a cyclic number.

It is not a de Polignac number, because 91706000497 - 2³¹ = 89558516849 is a prime.

It is not a weakly prime, because it can be changed into another prime (91706009497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45853000248 + 45853000249.

It is an arithmetic number, because the mean of its divisors is an integer number (45853000249).

Almost surely, 2^91706000497 is an apocalyptic number.

It is an amenable number.

91706000497 is a deficient number, since it is larger than the sum of its proper divisors (1).

91706000497 is an equidigital number, since it uses as much as digits as its factorization.

91706000497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 91706000497 in words is "ninety-one billion, seven hundred six million, four hundred ninety-seven", and thus it is an aban number.