90710897 has 2 divisors, whose sum is σ = 90710898. Its totient is φ = 90710896.

The previous prime is 90710891. The next prime is 90710899. The reversal of 90710897 is 79801709.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60855601 + 29855296 = 7801^2 + 5464^2 .

It is a cyclic number.

It is not a de Polignac number, because 90710897 - 2⁶ = 90710833 is a prime.

Together with 90710899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90710891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45355448 + 45355449.

It is an arithmetic number, because the mean of its divisors is an integer number (45355449).

Almost surely, 2^90710897 is an apocalyptic number.

It is an amenable number.

90710897 is a deficient number, since it is larger than the sum of its proper divisors (1).

90710897 is an equidigital number, since it uses as much as digits as its factorization.

90710897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 90710897 is about 9524.2268452615. The cubic root of 90710897 is about 449.3173138051.

The spelling of 90710897 in words is "ninety million, seven hundred ten thousand, eight hundred ninety-seven".