797257 has 4 divisors (see below), whose sum is σ = 804816. Its totient is φ = 789700.

The previous prime is 797207. The next prime is 797273. The reversal of 797257 is 752797.

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 a de Polignac number, because none of the positive numbers 2^k-797257 is a prime.

It is a Duffinian number.

797257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (797207) 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, 3619 + ... + 3832.

It is an arithmetic number, because the mean of its divisors is an integer number (201204).

2⁷⁹⁷²⁵⁷ is an apocalyptic number.

It is an amenable number.

797257 is a deficient number, since it is larger than the sum of its proper divisors (7559).

797257 is a wasteful number, since it uses less digits than its factorization.

797257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7558.

The product of its digits is 30870, while the sum is 37.

The square root of 797257 is about 892.8924907289. The cubic root of 797257 is about 92.7255561937.

The spelling of 797257 in words is "seven hundred ninety-seven thousand, two hundred fifty-seven".