810716540 has 24 divisors (see below), whose sum is σ = 1704199392. Its totient is φ = 323963840.

The previous prime is 810716531. The next prime is 810716593. The reversal of 810716540 is 45617018.

It is a happy number.

It is a super-2 number, since 2×810716540² = 1314522616459143200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 810716497 and 810716506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962 + ... + 40278.

It is an arithmetic number, because the mean of its divisors is an integer number (71008308).

Almost surely, 2^810716540 is an apocalyptic number.

It is an amenable number.

810716540 is an abundant number, since it is smaller than the sum of its proper divisors (893482852).

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

810716540 is a wasteful number, since it uses less digits than its factorization.

810716540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40357 (or 40355 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 810716540 is about 28473.0844834205. The cubic root of 810716540 is about 932.4445419320. Note that the first 3 decimals are identical.

The spelling of 810716540 in words is "eight hundred ten million, seven hundred sixteen thousand, five hundred forty".