810222650 has 12 divisors (see below), whose sum is σ = 1507014222. Its totient is φ = 324089040.

The previous prime is 810222649. The next prime is 810222653. The reversal of 810222650 is 56222018.

It can be written as a sum of positive squares in 3 ways, for example, as 521528569 + 288694081 = 22837^2 + 16991^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (810222653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8102177 + ... + 8102276.

Almost surely, 2^810222650 is an apocalyptic number.

810222650 is a deficient number, since it is larger than the sum of its proper divisors (696791572).

810222650 is a wasteful number, since it uses less digits than its factorization.

810222650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16204465 (or 16204460 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 810222650 is about 28464.4102345367. The cubic root of 810222650 is about 932.2551544946.

Adding to 810222650 its reverse (56222018), we get a palindrome (866444668).

The spelling of 810222650 in words is "eight hundred ten million, two hundred twenty-two thousand, six hundred fifty".