720884736 has 264 divisors, whose sum is σ = 2449915104. Its totient is φ = 201277440.

The previous prime is 720884701. The next prime is 720884767. The reversal of 720884736 is 637488027.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (264).

It is a junction number, because it is equal to n+sod(n) for n = 720884691 and 720884700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1317615 + ... + 1318161.

Almost surely, 2^720884736 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 720884736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1224957552).

720884736 is an abundant number, since it is smaller than the sum of its proper divisors (1729030368).

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

720884736 is a wasteful number, since it uses less digits than its factorization.

720884736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 720884736 is about 26849.2967505669. The cubic root of 720884736 is about 896.6479157198.

The spelling of 720884736 in words is "seven hundred twenty million, eight hundred eighty-four thousand, seven hundred thirty-six".