1297564 has 6 divisors (see below), whose sum is σ = 2270744. Its totient is φ = 648780.

The previous prime is 1297561. The next prime is 1297573. The reversal of 1297564 is 4657921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297561) 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 as a sum of consecutive naturals, namely, 162192 + ... + 162199.

2^1297564 is an apocalyptic number.

It is an amenable number.

1297564 is a deficient number, since it is larger than the sum of its proper divisors (973180).

1297564 is a wasteful number, since it uses less digits than its factorization.

1297564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324395 (or 324393 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 1297564 is about 1139.1066675250. The cubic root of 1297564 is about 109.0710756031.

The spelling of 1297564 in words is "one million, two hundred ninety-seven thousand, five hundred sixty-four".