1297336897 has 2 divisors, whose sum is σ = 1297336898. Its totient is φ = 1297336896.

The previous prime is 1297336889. The next prime is 1297336907. The reversal of 1297336897 is 7986337921.

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., 1126877761 + 170459136 = 33569^2 + 13056^2 .

It is a cyclic number.

It is not a de Polignac number, because 1297336897 - 2³ = 1297336889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1297306897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648668448 + 648668449.

It is an arithmetic number, because the mean of its divisors is an integer number (648668449).

Almost surely, 2^1297336897 is an apocalyptic number.

It is an amenable number.

1297336897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297336897 is an equidigital number, since it uses as much as digits as its factorization.

1297336897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 55.

The square root of 1297336897 is about 36018.5632278690. The cubic root of 1297336897 is about 1090.6471193145.

The spelling of 1297336897 in words is "one billion, two hundred ninety-seven million, three hundred thirty-six thousand, eight hundred ninety-seven".