720097556 has 24 divisors (see below), whose sum is σ = 1267418880. Its totient is φ = 357985152.

The previous prime is 720097531. The next prime is 720097559. The reversal of 720097556 is 655790027.

720097556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720097559) 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, 833981 + ... + 834843.

It is an arithmetic number, because the mean of its divisors is an integer number (52809120).

Almost surely, 2^720097556 is an apocalyptic number.

It is an amenable number.

720097556 is a deficient number, since it is larger than the sum of its proper divisors (547321324).

720097556 is a wasteful number, since it uses less digits than its factorization.

720097556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823 (or 1821 counting only the distinct ones).

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 720097556 is about 26834.6335171547. The cubic root of 720097556 is about 896.3214278464.

The spelling of 720097556 in words is "seven hundred twenty million, ninety-seven thousand, five hundred fifty-six".