85730497 has 2 divisors, whose sum is σ = 85730498. Its totient is φ = 85730496.

The previous prime is 85730479. The next prime is 85730503. The reversal of 85730497 is 79403758.

It is a happy number.

Together with previous prime (85730479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48776256 + 36954241 = 6984^2 + 6079^2 .

It is a cyclic number.

It is not a de Polignac number, because 85730497 - 2²³ = 77341889 is a prime.

It is not a weakly prime, because it can be changed into another prime (85730417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42865248 + 42865249.

It is an arithmetic number, because the mean of its divisors is an integer number (42865249).

Almost surely, 2^85730497 is an apocalyptic number.

It is an amenable number.

85730497 is a deficient number, since it is larger than the sum of its proper divisors (1).

85730497 is an equidigital number, since it uses as much as digits as its factorization.

85730497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 85730497 is about 9259.0764658253. The cubic root of 85730497 is about 440.9389333090.

The spelling of 85730497 in words is "eighty-five million, seven hundred thirty thousand, four hundred ninety-seven".