804690 has 24 divisors (see below), whose sum is σ = 2092428. Its totient is φ = 214560.

The previous prime is 804689. The next prime is 804697. The reversal of 804690 is 96408.

It can be written as a sum of positive squares in 2 ways, for example, as 804609 + 81 = 897^2 + 9^2 .

It is a super-2 number, since 2×804690² = 1295051992200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (804697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4381 + ... + 4560.

2⁸⁰⁴⁶⁹⁰ is an apocalyptic number.

804690 is an abundant number, since it is smaller than the sum of its proper divisors (1287738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

804690 is a wasteful number, since it uses less digits than its factorization.

804690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8954 (or 8951 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 804690 is about 897.0451493654. The cubic root of 804690 is about 93.0128320830.

The spelling of 804690 in words is "eight hundred four thousand, six hundred ninety".