797689 has 2 divisors, whose sum is σ = 797690. Its totient is φ = 797688.

The previous prime is 797681. The next prime is 797701. The reversal of 797689 is 986797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 795664 + 2025 = 892^2 + 45^2 .

It is a cyclic number.

It is not a de Polignac number, because 797689 - 2³ = 797681 is a prime.

It is not a weakly prime, because it can be changed into another prime (797681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398844 + 398845.

It is an arithmetic number, because the mean of its divisors is an integer number (398845).

2⁷⁹⁷⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

797689 is a deficient number, since it is larger than the sum of its proper divisors (1).

797689 is an equidigital number, since it uses as much as digits as its factorization.

797689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 46.

The square root of 797689 is about 893.1343683903. The cubic root of 797689 is about 92.7423011945.

The spelling of 797689 in words is "seven hundred ninety-seven thousand, six hundred eighty-nine".