1297563 has 8 divisors (see below), whose sum is σ = 1735488. Its totient is φ = 862344.

The previous prime is 1297561. The next prime is 1297573. The reversal of 1297563 is 3657921.

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

It is not a de Polignac number, because 1297563 - 2¹ = 1297561 is a prime.

1297563 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1297561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1156 + ... + 1982.

It is an arithmetic number, because the mean of its divisors is an integer number (216936).

2^1297563 is an apocalyptic number.

1297563 is a deficient number, since it is larger than the sum of its proper divisors (437925).

1297563 is an equidigital number, since it uses as much as digits as its factorization.

1297563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353.

The product of its digits is 11340, while the sum is 33.

The square root of 1297563 is about 1139.1062285845. The cubic root of 1297563 is about 109.0710475837.

The spelling of 1297563 in words is "one million, two hundred ninety-seven thousand, five hundred sixty-three".