1297727 has 2 divisors, whose sum is σ = 1297728. Its totient is φ = 1297726.

The previous prime is 1297693. The next prime is 1297739. The reversal of 1297727 is 7277921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1297727 - 2¹⁰ = 1296703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648863 + 648864.

It is an arithmetic number, because the mean of its divisors is an integer number (648864).

2^1297727 is an apocalyptic number.

1297727 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297727 is an equidigital number, since it uses as much as digits as its factorization.

1297727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12348, while the sum is 35.

The square root of 1297727 is about 1139.1782125726. The cubic root of 1297727 is about 109.0756425817.

The spelling of 1297727 in words is "one million, two hundred ninety-seven thousand, seven hundred twenty-seven".