797945 has 4 divisors (see below), whose sum is σ = 957540. Its totient is φ = 638352.

The previous prime is 797933. The next prime is 797947. The reversal of 797945 is 549797.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549797 = 17 ⋅32341.

It can be written as a sum of positive squares in 2 ways, for example, as 123904 + 674041 = 352^2 + 821^2 .

It is a cyclic number.

It is not a de Polignac number, because 797945 - 2⁸ = 797689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (797947) 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 3 ways as a sum of consecutive naturals, for example, 79790 + ... + 79799.

It is an arithmetic number, because the mean of its divisors is an integer number (239385).

2⁷⁹⁷⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

797945 is a deficient number, since it is larger than the sum of its proper divisors (159595).

797945 is a wasteful number, since it uses less digits than its factorization.

797945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159594.

The product of its digits is 79380, while the sum is 41.

The square root of 797945 is about 893.2776723953. The cubic root of 797945 is about 92.7522213053.

The spelling of 797945 in words is "seven hundred ninety-seven thousand, nine hundred forty-five".