720224441 has 4 divisors (see below), whose sum is σ = 720288000. Its totient is φ = 720160884.

The previous prime is 720224411. The next prime is 720224447. The reversal of 720224441 is 144422027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 720224441 - 2¹⁰ = 720223417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 720224441.

It is not an unprimeable number, because it can be changed into a prime (720224447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9641 + ... + 39158.

It is an arithmetic number, because the mean of its divisors is an integer number (180072000).

Almost surely, 2^720224441 is an apocalyptic number.

It is an amenable number.

720224441 is a deficient number, since it is larger than the sum of its proper divisors (63559).

720224441 is a wasteful number, since it uses less digits than its factorization.

720224441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63558.

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 720224441 is about 26836.9976152326. The cubic root of 720224441 is about 896.3740702808.

Adding to 720224441 its reverse (144422027), we get a palindrome (864646468).

The spelling of 720224441 in words is "seven hundred twenty million, two hundred twenty-four thousand, four hundred forty-one".