810716620 has 96 divisors (see below), whose sum is σ = 2036700288. Its totient is φ = 265254912.

The previous prime is 810716593. The next prime is 810716623. The reversal of 810716620 is 26617018.

It is a super-2 number, since 2×810716620² = 1314522875888448800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (810716623) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 273064 + ... + 276016.

It is an arithmetic number, because the mean of its divisors is an integer number (21215628).

Almost surely, 2^810716620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 810716620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1018350144).

810716620 is an abundant number, since it is smaller than the sum of its proper divisors (1225983668).

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

810716620 is a wasteful number, since it uses less digits than its factorization.

810716620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3059 (or 3057 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 810716620 is about 28473.0858882559. The cubic root of 810716620 is about 932.4445726027. Note that the first 3 decimals are identical.

The spelling of 810716620 in words is "eight hundred ten million, seven hundred sixteen thousand, six hundred twenty".