1297345 has 16 divisors (see below), whose sum is σ = 1801728. Its totient is φ = 878400.

The previous prime is 1297337. The next prime is 1297349. The reversal of 1297345 is 5437921.

It is not a de Polignac number, because 1297345 - 2³ = 1297337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1297349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3352 + ... + 3718.

It is an arithmetic number, because the mean of its divisors is an integer number (112608).

2^1297345 is an apocalyptic number.

It is an amenable number.

1297345 is a deficient number, since it is larger than the sum of its proper divisors (504383).

1297345 is a wasteful number, since it uses less digits than its factorization.

1297345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480.

The product of its digits is 7560, while the sum is 31.

The square root of 1297345 is about 1139.0105355088. The cubic root of 1297345 is about 109.0649389990.

The spelling of 1297345 in words is "one million, two hundred ninety-seven thousand, three hundred forty-five".