720565089 has 8 divisors (see below), whose sum is σ = 961613472. Its totient is φ = 479946720.

The previous prime is 720565073. The next prime is 720565103. The reversal of 720565089 is 980565027.

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

It is not a de Polignac number, because 720565089 - 2⁴ = 720565073 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 720565089.

It is not an unprimeable number, because it can be changed into a prime (720565039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103572 + ... + 110309.

It is an arithmetic number, because the mean of its divisors is an integer number (120201684).

Almost surely, 2^720565089 is an apocalyptic number.

It is an amenable number.

720565089 is a deficient number, since it is larger than the sum of its proper divisors (241048383).

720565089 is a wasteful number, since it uses less digits than its factorization.

720565089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215007.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 720565089 is about 26843.3434765493. The cubic root of 720565089 is about 896.5153687839.

The spelling of 720565089 in words is "seven hundred twenty million, five hundred sixty-five thousand, eighty-nine".