723247056 has 200 divisors, whose sum is σ = 2442651200. Its totient is φ = 206515008.

The previous prime is 723247051. The next prime is 723247079. The reversal of 723247056 is 650742327.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 723247056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723247051) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 443715 + ... + 445341.

It is an arithmetic number, because the mean of its divisors is an integer number (12213256).

Almost surely, 2^723247056 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 723247056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1221325600).

723247056 is an abundant number, since it is smaller than the sum of its proper divisors (1719404144).

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

723247056 is a wasteful number, since it uses less digits than its factorization.

723247056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668 (or 1639 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 723247056 is about 26893.2529828580. The cubic root of 723247056 is about 897.6262782206.

The spelling of 723247056 in words is "seven hundred twenty-three million, two hundred forty-seven thousand, fifty-six".