997070897 has 2 divisors, whose sum is σ = 997070898. Its totient is φ = 997070896.

The previous prime is 997070891. The next prime is 997070909. The reversal of 997070897 is 798070799.

997070897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 542144656 + 454926241 = 23284^2 + 21329^2 .

It is an emirp because it is prime and its reverse (798070799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997070897 - 2⁴ = 997070881 is a prime.

It is not a weakly prime, because it can be changed into another prime (997070891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498535448 + 498535449.

It is an arithmetic number, because the mean of its divisors is an integer number (498535449).

Almost surely, 2^997070897 is an apocalyptic number.

It is an amenable number.

997070897 is a deficient number, since it is larger than the sum of its proper divisors (1).

997070897 is an equidigital number, since it uses as much as digits as its factorization.

997070897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000376, while the sum is 56.

The square root of 997070897 is about 31576.4294529955. The cubic root of 997070897 is about 999.0226774852.

The spelling of 997070897 in words is "nine hundred ninety-seven million, seventy thousand, eight hundred ninety-seven".