1297827 has 6 divisors (see below), whose sum is σ = 1874652. Its totient is φ = 865212.

The previous prime is 1297799. The next prime is 1297841. The reversal of 1297827 is 7287921.

It is not a de Polignac number, because 1297827 - 2¹⁰ = 1296803 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1297791 and 1297800.

It is not an unprimeable number, because it can be changed into a prime (1297847) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72093 + ... + 72110.

It is an arithmetic number, because the mean of its divisors is an integer number (312442).

2^1297827 is an apocalyptic number.

1297827 is a deficient number, since it is larger than the sum of its proper divisors (576825).

1297827 is a wasteful number, since it uses less digits than its factorization.

1297827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144209 (or 144206 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 1297827 is about 1139.2221030159. Note that the first 3 decimals coincide. The cubic root of 1297827 is about 109.0784442197.

The spelling of 1297827 in words is "one million, two hundred ninety-seven thousand, eight hundred twenty-seven".