823697 has 4 divisors (see below), whose sum is σ = 941376. Its totient is φ = 706020.

The previous prime is 823679. The next prime is 823703. The reversal of 823697 is 796328.

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 not a de Polignac number, because 823697 - 2¹⁰ = 822673 is a prime.

It is a d-powerful number, because it can be written as 8 + 2⁷ + 6 + 3 + 9 + 7⁷ .

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (823637) 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, 58829 + ... + 58842.

It is an arithmetic number, because the mean of its divisors is an integer number (235344).

2⁸²³⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

823697 is a deficient number, since it is larger than the sum of its proper divisors (117679).

823697 is a wasteful number, since it uses less digits than its factorization.

823697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117678.

The product of its digits is 18144, while the sum is 35.

The square root of 823697 is about 907.5775448963. The cubic root of 823697 is about 93.7394702248.

The spelling of 823697 in words is "eight hundred twenty-three thousand, six hundred ninety-seven".