810122664 has 64 divisors (see below), whose sum is σ = 2188247040. Its totient is φ = 248451840.

The previous prime is 810122653. The next prime is 810122681. The reversal of 810122664 is 466221018.

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, 94809 + ... + 102999.

It is an arithmetic number, because the mean of its divisors is an integer number (34191360).

Almost surely, 2^810122664 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 810122664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1094123520).

810122664 is an abundant number, since it is smaller than the sum of its proper divisors (1378124376).

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

810122664 is a wasteful number, since it uses less digits than its factorization.

810122664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8530 (or 8526 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 810122664 is about 28462.6538467515. The cubic root of 810122664 is about 932.2168044195.

The spelling of 810122664 in words is "eight hundred ten million, one hundred twenty-two thousand, six hundred sixty-four".