720083591 has 4 divisors (see below), whose sum is σ = 720436392. Its totient is φ = 719730792.

The previous prime is 720083537. The next prime is 720083597. The reversal of 720083591 is 195380027.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 720083591 - 2¹⁸ = 719821447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720083597) 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 3 ways as a sum of consecutive naturals, for example, 173321 + ... + 177426.

It is an arithmetic number, because the mean of its divisors is an integer number (180109098).

Almost surely, 2^720083591 is an apocalyptic number.

720083591 is a deficient number, since it is larger than the sum of its proper divisors (352801).

720083591 is a wasteful number, since it uses less digits than its factorization.

720083591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352800.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 720083591 is about 26834.3733111098. The cubic root of 720083591 is about 896.3156336270.

The spelling of 720083591 in words is "seven hundred twenty million, eighty-three thousand, five hundred ninety-one".