809697 has 8 divisors (see below), whose sum is σ = 1233856. Its totient is φ = 462672.

The previous prime is 809629. The next prime is 809701. The reversal of 809697 is 796908.

809697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 809697 - 2⁷ = 809569 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (809297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19258 + ... + 19299.

It is an arithmetic number, because the mean of its divisors is an integer number (154232).

2⁸⁰⁹⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

809697 is a deficient number, since it is larger than the sum of its proper divisors (424159).

809697 is a wasteful number, since it uses less digits than its factorization.

809697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38567.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 809697 is about 899.8316509214. The cubic root of 809697 is about 93.2053503778.

The spelling of 809697 in words is "eight hundred nine thousand, six hundred ninety-seven".