810461 has 4 divisors (see below), whose sum is σ = 820800. Its totient is φ = 800124.

The previous prime is 810457. The next prime is 810473. The reversal of 810461 is 164018.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 164018 = 2 ⋅82009.

It is a cyclic number.

It is not a de Polignac number, because 810461 - 2² = 810457 is a prime.

It is a Duffinian number.

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 810461.

It is not an unprimeable number, because it can be changed into a prime (810401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5051 + ... + 5208.

It is an arithmetic number, because the mean of its divisors is an integer number (205200).

2⁸¹⁰⁴⁶¹ is an apocalyptic number.

It is an amenable number.

810461 is a deficient number, since it is larger than the sum of its proper divisors (10339).

810461 is a wasteful number, since it uses less digits than its factorization.

810461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10338.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 810461 is about 900.2560746810. The cubic root of 810461 is about 93.2346561974.

Adding to 810461 its reverse (164018), we get a palindrome (974479).

The spelling of 810461 in words is "eight hundred ten thousand, four hundred sixty-one".