804906 has 24 divisors (see below), whose sum is σ = 1765764. Its totient is φ = 264960.

The previous prime is 804901. The next prime is 804913. The reversal of 804906 is 609408.

It can be written as a sum of positive squares in 2 ways, for example, as 793881 + 11025 = 891^2 + 105^2 .

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 804906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1516 + ... + 1976.

2⁸⁰⁴⁹⁰⁶ is an apocalyptic number.

804906 is an abundant number, since it is smaller than the sum of its proper divisors (960858).

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

804906 is a wasteful number, since it uses less digits than its factorization.

804906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 563 counting only the distinct ones).

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

The square root of 804906 is about 897.1655365650. The cubic root of 804906 is about 93.0211537035.

The spelling of 804906 in words is "eight hundred four thousand, nine hundred six".