818763264 has 240 divisors, whose sum is σ = 2671503120. Its totient is φ = 239124480.

The previous prime is 818763263. The next prime is 818763307. The reversal of 818763264 is 462367818.

818763264 is a `hidden beast` number, since 8 + 1 + 8 + 7 + 632 + 6 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818763263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1469674 + ... + 1470230.

It is an arithmetic number, because the mean of its divisors is an integer number (11131263).

Almost surely, 2^818763264 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 818763264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1335751560).

818763264 is an abundant number, since it is smaller than the sum of its proper divisors (1852739856).

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

818763264 is a wasteful number, since it uses less digits than its factorization.

818763264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 602 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 818763264 is about 28614.0396309224. The cubic root of 818763264 is about 935.5193675281.

The spelling of 818763264 in words is "eight hundred eighteen million, seven hundred sixty-three thousand, two hundred sixty-four".