810730680 has 256 divisors, whose sum is σ = 2765767680. Its totient is φ = 188964864.

The previous prime is 810730667. The next prime is 810730709. The reversal of 810730680 is 86037018.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1735807 + ... + 1736273.

It is an arithmetic number, because the mean of its divisors is an integer number (10803780).

Almost surely, 2^810730680 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 810730680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1382883840).

810730680 is an abundant number, since it is smaller than the sum of its proper divisors (1955037000).

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

810730680 is a wasteful number, since it uses less digits than its factorization.

810730680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 810730680 is about 28473.3327870132. The cubic root of 810730680 is about 932.4499629345.

Adding to 810730680 its reverse (86037018), we get a palindrome (896767698).

The spelling of 810730680 in words is "eight hundred ten million, seven hundred thirty thousand, six hundred eighty".