818964680 has 64 divisors (see below), whose sum is σ = 1926892800. Its totient is φ = 312674560.

The previous prime is 818964677. The next prime is 818964683. The reversal of 818964680 is 86469818.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (818964677) and next prime (818964683).

It is not an unprimeable number, because it can be changed into a prime (818964683) 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 15 ways as a sum of consecutive naturals, for example, 771350 + ... + 772410.

It is an arithmetic number, because the mean of its divisors is an integer number (30107700).

Almost surely, 2^818964680 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 818964680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (963446400).

818964680 is an abundant number, since it is smaller than the sum of its proper divisors (1107928120).

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

818964680 is a wasteful number, since it uses less digits than its factorization.

818964680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934 (or 1930 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 818964680 is about 28617.5589455146. The cubic root of 818964680 is about 935.5960739170.

The spelling of 818964680 in words is "eight hundred eighteen million, nine hundred sixty-four thousand, six hundred eighty".