810494 has 4 divisors (see below), whose sum is σ = 1215744. Its totient is φ = 405246.

The previous prime is 810493. The next prime is 810503. The reversal of 810494 is 494018.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 810494.

It is not an unprimeable number, because it can be changed into a prime (810493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202622 + ... + 202625.

It is an arithmetic number, because the mean of its divisors is an integer number (303936).

2⁸¹⁰⁴⁹⁴ is an apocalyptic number.

810494 is a deficient number, since it is larger than the sum of its proper divisors (405250).

810494 is a wasteful number, since it uses less digits than its factorization.

810494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405249.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 810494 is about 900.2744026129. The cubic root of 810494 is about 93.2359216097.

The spelling of 810494 in words is "eight hundred ten thousand, four hundred ninety-four".