720346441 has 4 divisors (see below), whose sum is σ = 720450000. Its totient is φ = 720242884.

The previous prime is 720346439. The next prime is 720346463. The reversal of 720346441 is 144643027.

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 an emirpimes, since its reverse is a distinct semiprime: 144643027 = 37 ⋅3909271.

It is a cyclic number.

It is not a de Polignac number, because 720346441 - 2¹ = 720346439 is a prime.

It is a super-2 number, since 2×720346441² = 1037797990122732962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720346421) 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, 40531 + ... + 55528.

It is an arithmetic number, because the mean of its divisors is an integer number (180112500).

Almost surely, 2^720346441 is an apocalyptic number.

It is an amenable number.

720346441 is a deficient number, since it is larger than the sum of its proper divisors (103559).

720346441 is an equidigital number, since it uses as much as digits as its factorization.

720346441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103558.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 720346441 is about 26839.2705005185. The cubic root of 720346441 is about 896.4246801815.

Adding to 720346441 its reverse (144643027), we get a palindrome (864989468).

The spelling of 720346441 in words is "seven hundred twenty million, three hundred forty-six thousand, four hundred forty-one".