97804897 has 2 divisors, whose sum is σ = 97804898. Its totient is φ = 97804896.

The previous prime is 97804871. The next prime is 97804921. The reversal of 97804897 is 79840879.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79495056 + 18309841 = 8916^2 + 4279^2 .

It is an emirp because it is prime and its reverse (79840879) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97804897 is a prime.

It is not a weakly prime, because it can be changed into another prime (97804867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48902448 + 48902449.

It is an arithmetic number, because the mean of its divisors is an integer number (48902449).

Almost surely, 2^97804897 is an apocalyptic number.

It is an amenable number.

97804897 is a deficient number, since it is larger than the sum of its proper divisors (1).

97804897 is an equidigital number, since it uses as much as digits as its factorization.

97804897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 97804897 is about 9889.6358375827. The cubic root of 97804897 is about 460.7374701780.

The spelling of 97804897 in words is "ninety-seven million, eight hundred four thousand, eight hundred ninety-seven".