784528668 has 144 divisors (see below), whose sum is σ = 2493953280. Its totient is φ = 203686560.

The previous prime is 784528651. The next prime is 784528669. The reversal of 784528668 is 866825487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (784528669) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 334243 + ... + 336581.

It is an arithmetic number, because the mean of its divisors is an integer number (17319120).

Almost surely, 2^784528668 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 784528668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1246976640).

784528668 is an abundant number, since it is smaller than the sum of its proper divisors (1709424612).

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

784528668 is a wasteful number, since it uses less digits than its factorization.

784528668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389 (or 2362 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The square root of 784528668 is about 28009.4389090535. The cubic root of 784528668 is about 922.2944729081.

The spelling of 784528668 in words is "seven hundred eighty-four million, five hundred twenty-eight thousand, six hundred sixty-eight".