809672 has 8 divisors (see below), whose sum is σ = 1518150. Its totient is φ = 404832.

The previous prime is 809629. The next prime is 809701. The reversal of 809672 is 276908.

It can be written as a sum of positive squares in only one way, i.e., 763876 + 45796 = 874^2 + 214^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50597 + ... + 50612.

2⁸⁰⁹⁶⁷² is an apocalyptic number.

It is an amenable number.

809672 is a deficient number, since it is larger than the sum of its proper divisors (708478).

809672 is a wasteful number, since it uses less digits than its factorization.

809672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101215 (or 101211 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 809672 is about 899.8177593269. The cubic root of 809672 is about 93.2043911063.

The spelling of 809672 in words is "eight hundred nine thousand, six hundred seventy-two".