797669 has 4 divisors (see below), whose sum is σ = 801996. Its totient is φ = 793344.

The previous prime is 797647. The next prime is 797681. The reversal of 797669 is 966797.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 390625 + 407044 = 625^2 + 638^2 .

It is a cyclic number.

It is not a de Polignac number, because 797669 - 2¹⁶ = 732133 is a prime.

It is a super-2 number, since 2×797669² = 1272551667122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797689) 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, 1874 + ... + 2259.

It is an arithmetic number, because the mean of its divisors is an integer number (200499).

2⁷⁹⁷⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

797669 is a deficient number, since it is larger than the sum of its proper divisors (4327).

797669 is a wasteful number, since it uses less digits than its factorization.

797669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4326.

The product of its digits is 142884, while the sum is 44.

The square root of 797669 is about 893.1231717966. The cubic root of 797669 is about 92.7415260965.

The spelling of 797669 in words is "seven hundred ninety-seven thousand, six hundred sixty-nine".