720520833 has 8 divisors (see below), whose sum is σ = 964681696. Its totient is φ = 478353600.

The previous prime is 720520789. The next prime is 720520859. The reversal of 720520833 is 338025027.

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

It is not a de Polignac number, because 720520833 - 2¹² = 720516737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 720520833.

It is not an unprimeable number, because it can be changed into a prime (720520873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497563 + ... + 499008.

It is an arithmetic number, because the mean of its divisors is an integer number (120585212).

Almost surely, 2^720520833 is an apocalyptic number.

It is an amenable number.

720520833 is a deficient number, since it is larger than the sum of its proper divisors (244160863).

720520833 is a wasteful number, since it uses less digits than its factorization.

720520833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996815.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 720520833 is about 26842.5191254472. The cubic root of 720520833 is about 896.4970142096.

The spelling of 720520833 in words is "seven hundred twenty million, five hundred twenty thousand, eight hundred thirty-three".