810906 has 8 divisors (see below), whose sum is σ = 1621824. Its totient is φ = 270300.

The previous prime is 810893. The next prime is 810907. The reversal of 810906 is 609018.

It is a sphenic number, since it is the product of 3 distinct primes.

810906 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (810907) by changing a digit.

810906 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67570 + ... + 67581.

It is an arithmetic number, because the mean of its divisors is an integer number (202728).

2⁸¹⁰⁹⁰⁶ is an apocalyptic number.

810906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

810906 is a wasteful number, since it uses less digits than its factorization.

810906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135156.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 810906 is about 900.5031926651. The cubic root of 810906 is about 93.2517171996.

The spelling of 810906 in words is "eight hundred ten thousand, nine hundred six".