1297068305 has 8 divisors (see below), whose sum is σ = 1676211432. Its totient is φ = 957835008.

The previous prime is 1297068299. The next prime is 1297068319. The reversal of 1297068305 is 5038607921.

1297068305 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8042896 + 1289025409 = 2836^2 + 35903^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1297068305 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9977384 + ... + 9977513.

It is an arithmetic number, because the mean of its divisors is an integer number (209526429).

Almost surely, 2^1297068305 is an apocalyptic number.

It is an amenable number.

1297068305 is a deficient number, since it is larger than the sum of its proper divisors (379143127).

1297068305 is a wasteful number, since it uses less digits than its factorization.

1297068305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19954915.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 1297068305 is about 36014.8345130170. The cubic root of 1297068305 is about 1090.5718473451.

The spelling of 1297068305 in words is "one billion, two hundred ninety-seven million, sixty-eight thousand, three hundred five".