810361 has 2 divisors, whose sum is σ = 810362. Its totient is φ = 810360.

The previous prime is 810353. The next prime is 810367. The reversal of 810361 is 163018.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 810000 + 361 = 900^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 810361 - 2³ = 810353 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (810367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405180 + 405181.

It is an arithmetic number, because the mean of its divisors is an integer number (405181).

2⁸¹⁰³⁶¹ is an apocalyptic number.

It is an amenable number.

810361 is a deficient number, since it is larger than the sum of its proper divisors (1).

810361 is an equidigital number, since it uses as much as digits as its factorization.

810361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 810361 is about 900.2005332147. The cubic root of 810361 is about 93.2308214050.

Adding to 810361 its reverse (163018), we get a palindrome (973379).

The spelling of 810361 in words is "eight hundred ten thousand, three hundred sixty-one".