1297305568 has 24 divisors (see below), whose sum is σ = 2750538168. Its totient is φ = 598756224.

The previous prime is 1297305553. The next prime is 1297305587. The reversal of 1297305568 is 8655037921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1558846 + ... + 1559677.

It is an arithmetic number, because the mean of its divisors is an integer number (114605757).

Almost surely, 2^1297305568 is an apocalyptic number.

It is an amenable number.

1297305568 is an abundant number, since it is smaller than the sum of its proper divisors (1453232600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1297305568 is a wasteful number, since it uses less digits than its factorization.

1297305568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3118546 (or 3118538 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 1297305568 is about 36018.1283244979. The cubic root of 1297305568 is about 1090.6383400070.

The spelling of 1297305568 in words is "one billion, two hundred ninety-seven million, three hundred five thousand, five hundred sixty-eight".