731684768 has 48 divisors (see below), whose sum is σ = 1484701344. Its totient is φ = 354689280.

The previous prime is 731684747. The next prime is 731684771. The reversal of 731684768 is 867486137.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390971 + ... + 392837.

It is an arithmetic number, because the mean of its divisors is an integer number (30931278).

Almost surely, 2^731684768 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 731684768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (742350672).

731684768 is an abundant number, since it is smaller than the sum of its proper divisors (753016576).

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

731684768 is a wasteful number, since it uses less digits than its factorization.

731684768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245 (or 2237 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The square root of 731684768 is about 27049.6722346131. The cubic root of 731684768 is about 901.1034892581.

The spelling of 731684768 in words is "seven hundred thirty-one million, six hundred eighty-four thousand, seven hundred sixty-eight".