1297798 has 16 divisors (see below), whose sum is σ = 2060640. Its totient is φ = 611776.

The previous prime is 1297781. The next prime is 1297799. The reversal of 1297798 is 8977921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297799) 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 7 ways as a sum of consecutive naturals, for example, 3936 + ... + 4252.

It is an arithmetic number, because the mean of its divisors is an integer number (128790).

2^1297798 is an apocalyptic number.

1297798 is a deficient number, since it is larger than the sum of its proper divisors (762842).

1297798 is a wasteful number, since it uses less digits than its factorization.

1297798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431.

The product of its digits is 63504, while the sum is 43.

The square root of 1297798 is about 1139.2093749614. The cubic root of 1297798 is about 109.0776317595.

The spelling of 1297798 in words is "one million, two hundred ninety-seven thousand, seven hundred ninety-eight".