764843680 has 48 divisors (see below), whose sum is σ = 1869262920. Its totient is φ = 295386112.

The previous prime is 764843663. The next prime is 764843683. The reversal of 764843680 is 86348467.

764843680 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 761980816 + 2862864 = 27604^2 + 1692^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 764843680.

It is not an unprimeable number, because it can be changed into a prime (764843683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77779 + ... + 87058.

Almost surely, 2^764843680 is an apocalyptic number.

It is an amenable number.

764843680 is an abundant number, since it is smaller than the sum of its proper divisors (1104419240).

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

764843680 is a wasteful number, since it uses less digits than its factorization.

764843680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164881 (or 164873 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The square root of 764843680 is about 27655.8073467400. The cubic root of 764843680 is about 914.5151282562.

The spelling of 764843680 in words is "seven hundred sixty-four million, eight hundred forty-three thousand, six hundred eighty".