720543512 has 64 divisors (see below), whose sum is σ = 1542088800. Its totient is φ = 313205760.

The previous prime is 720543503. The next prime is 720543547. The reversal of 720543512 is 215345027.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120743 + ... + 126569.

Almost surely, 2^720543512 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 720543512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771044400).

720543512 is an abundant number, since it is smaller than the sum of its proper divisors (821545288).

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

720543512 is a wasteful number, since it uses less digits than its factorization.

720543512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5916 (or 5912 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 720543512 is about 26842.9415675704. The cubic root of 720543512 is about 896.5064201104.

Adding to 720543512 its reverse (215345027), we get a palindrome (935888539).

The spelling of 720543512 in words is "seven hundred twenty million, five hundred forty-three thousand, five hundred twelve".