720487680 has 288 divisors, whose sum is σ = 2583681408. Its totient is φ = 169574400.

The previous prime is 720487667. The next prime is 720487681. The reversal of 720487680 is 86784027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720487681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1562650 + ... + 1563110.

It is an arithmetic number, because the mean of its divisors is an integer number (8971116).

Almost surely, 2^720487680 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 720487680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1291840704).

720487680 is an abundant number, since it is smaller than the sum of its proper divisors (1863193728).

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

720487680 is a wasteful number, since it uses less digits than its factorization.

720487680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 720487680 is about 26841.9015719826. The cubic root of 720487680 is about 896.4832639612.

The spelling of 720487680 in words is "seven hundred twenty million, four hundred eighty-seven thousand, six hundred eighty".