720443552 has 12 divisors (see below), whose sum is σ = 1418373306. Its totient is φ = 360221760.

The previous prime is 720443551. The next prime is 720443557. The reversal of 720443552 is 255344027.

It can be written as a sum of positive squares in only one way, i.e., 406586896 + 313856656 = 20164^2 + 17716^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 22513861 = 720443552 / (7 + 2 + 0 + 4 + 4 + 3 + 5 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (720443551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11256899 + ... + 11256962.

Almost surely, 2^720443552 is an apocalyptic number.

It is an amenable number.

720443552 is a deficient number, since it is larger than the sum of its proper divisors (697929754).

720443552 is a wasteful number, since it uses less digits than its factorization.

720443552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22513871 (or 22513863 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 32.

The square root of 720443552 is about 26841.0795610013. The cubic root of 720443552 is about 896.4649611633.

Adding to 720443552 its reverse (255344027), we get a palindrome (975787579).

The spelling of 720443552 in words is "seven hundred twenty million, four hundred forty-three thousand, five hundred fifty-two".