811330560 has 176 divisors, whose sum is σ = 2883813600. Its totient is φ = 216317952.

The previous prime is 811330523. The next prime is 811330607. The reversal of 811330560 is 65033118.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135306 + ... + 141174.

Almost surely, 2^811330560 is an apocalyptic number.

811330560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 811330560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1441906800).

811330560 is an abundant number, since it is smaller than the sum of its proper divisors (2072483040).

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

811330560 is a wasteful number, since it uses less digits than its factorization.

811330560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5903 (or 5879 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 811330560 is about 28483.8649062939. The cubic root of 811330560 is about 932.6798872868.

Adding to 811330560 its reverse (65033118), we get a palindrome (876363678).

The spelling of 811330560 in words is "eight hundred eleven million, three hundred thirty thousand, five hundred sixty".