810653244 has 12 divisors (see below), whose sum is σ = 1891524264. Its totient is φ = 270217744.

The previous prime is 810653213. The next prime is 810653257. The reversal of 810653244 is 442356018.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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, 33777207 + ... + 33777230.

It is an arithmetic number, because the mean of its divisors is an integer number (157627022).

Almost surely, 2^810653244 is an apocalyptic number.

It is an amenable number.

810653244 is an abundant number, since it is smaller than the sum of its proper divisors (1080871020).

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

810653244 is a wasteful number, since it uses less digits than its factorization.

810653244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67554444 (or 67554442 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 810653244 is about 28471.9729558736. The cubic root of 810653244 is about 932.4202746973.

The spelling of 810653244 in words is "eight hundred ten million, six hundred fifty-three thousand, two hundred forty-four".