809612 has 6 divisors (see below), whose sum is σ = 1416828. Its totient is φ = 404804.

The previous prime is 809603. The next prime is 809629. The reversal of 809612 is 216908.

It is a plaindrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 809612.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101198 + ... + 101205.

It is an arithmetic number, because the mean of its divisors is an integer number (236138).

2⁸⁰⁹⁶¹² is an apocalyptic number.

It is an amenable number.

809612 is a deficient number, since it is larger than the sum of its proper divisors (607216).

809612 is a wasteful number, since it uses less digits than its factorization.

809612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202407 (or 202405 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 809612 is about 899.7844186248. The cubic root of 809612 is about 93.2020887741.

Subtracting from 809612 its reverse (216908), we obtain a cube (592704 = 84³).

The spelling of 809612 in words is "eight hundred nine thousand, six hundred twelve".