720743441 has 8 divisors (see below), whose sum is σ = 832516704. Its totient is φ = 616678720.

The previous prime is 720743423. The next prime is 720743447. The reversal of 720743441 is 144347027.

720743441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720743441 is a prime.

It is a super-2 number, since 2×720743441² = 1038942215489040962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 720743398 and 720743407.

It is not an unprimeable number, because it can be changed into a prime (720743447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1926935 + ... + 1927308.

It is an arithmetic number, because the mean of its divisors is an integer number (104064588).

Almost surely, 2^720743441 is an apocalyptic number.

It is an amenable number.

720743441 is a deficient number, since it is larger than the sum of its proper divisors (111773263).

720743441 is a wasteful number, since it uses less digits than its factorization.

720743441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3854271.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 720743441 is about 26846.6653608972. The cubic root of 720743441 is about 896.5893302349.

The spelling of 720743441 in words is "seven hundred twenty million, seven hundred forty-three thousand, four hundred forty-one".