784676872 has 64 divisors (see below), whose sum is σ = 1742601600. Its totient is φ = 324280320.

The previous prime is 784676869. The next prime is 784676873. The reversal of 784676872 is 278676487.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (784676873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172872 + ... + 177352.

It is an arithmetic number, because the mean of its divisors is an integer number (27228150).

Almost surely, 2^784676872 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 784676872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (871300800).

784676872 is an abundant number, since it is smaller than the sum of its proper divisors (957924728).

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

784676872 is a wasteful number, since it uses less digits than its factorization.

784676872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4606 (or 4602 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 55.

The square root of 784676872 is about 28012.0843922761. The cubic root of 784676872 is about 922.3525456208.

The spelling of 784676872 in words is "seven hundred eighty-four million, six hundred seventy-six thousand, eight hundred seventy-two".