805697 has 4 divisors (see below), whose sum is σ = 811716. Its totient is φ = 799680.

The previous prime is 805687. The next prime is 805703. The reversal of 805697 is 796508.

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 579121 + 226576 = 761^2 + 476^2 .

It is a cyclic number.

It is not a de Polignac number, because 805697 - 2⁶ = 805633 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 805697.

It is not an unprimeable number, because it can be changed into a prime (805687) 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, 2804 + ... + 3077.

It is an arithmetic number, because the mean of its divisors is an integer number (202929).

2⁸⁰⁵⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

805697 is a deficient number, since it is larger than the sum of its proper divisors (6019).

805697 is a wasteful number, since it uses less digits than its factorization.

805697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6018.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 805697 is about 897.6062611190. The cubic root of 805697 is about 93.0516150836.

The spelling of 805697 in words is "eight hundred five thousand, six hundred ninety-seven".