1205797 has 4 divisors (see below), whose sum is σ = 1269280. Its totient is φ = 1142316.

The previous prime is 1205779. The next prime is 1205819. The reversal of 1205797 is 7975021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1205797 - 2⁷ = 1205669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31713 + ... + 31750.

It is an arithmetic number, because the mean of its divisors is an integer number (317320).

2^1205797 is an apocalyptic number.

It is an amenable number.

1205797 is a deficient number, since it is larger than the sum of its proper divisors (63483).

1205797 is an equidigital number, since it uses as much as digits as its factorization.

1205797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63482.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 1205797 is about 1098.0878835503. The cubic root of 1205797 is about 106.4366996565.

It can be divided in two parts, 1205 and 797, that added together give a palindrome (2002).

The spelling of 1205797 in words is "one million, two hundred five thousand, seven hundred ninety-seven".