1297797 has 8 divisors (see below), whose sum is σ = 1832256. Its totient is φ = 814272.

The previous prime is 1297781. The next prime is 1297799. The reversal of 1297797 is 7977921.

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

It is not a de Polignac number, because 1297797 - 2⁴ = 1297781 is a prime.

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, 12673 + ... + 12774.

It is an arithmetic number, because the mean of its divisors is an integer number (229032).

2^1297797 is an apocalyptic number.

1297797 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1297797 is a deficient number, since it is larger than the sum of its proper divisors (534459).

1297797 is a wasteful number, since it uses less digits than its factorization.

1297797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25467.

The product of its digits is 55566, while the sum is 42.

The square root of 1297797 is about 1139.2089360605. The cubic root of 1297797 is about 109.0776037434.

The spelling of 1297797 in words is "one million, two hundred ninety-seven thousand, seven hundred ninety-seven".