810768540 has 24 divisors (see below), whose sum is σ = 2270152080. Its totient is φ = 216204928.

The previous prime is 810768529. The next prime is 810768557. The reversal of 810768540 is 45867018.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 6756345 + ... + 6756464.

It is an arithmetic number, because the mean of its divisors is an integer number (94589670).

Almost surely, 2^810768540 is an apocalyptic number.

It is an amenable number.

810768540 is an abundant number, since it is smaller than the sum of its proper divisors (1459383540).

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

810768540 is a wasteful number, since it uses less digits than its factorization.

810768540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13512821 (or 13512819 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 810768540 is about 28473.9976118563. The cubic root of 810768540 is about 932.4644774159.

The spelling of 810768540 in words is "eight hundred ten million, seven hundred sixty-eight thousand, five hundred forty".