720642283 has 4 divisors (see below), whose sum is σ = 722989960. Its totient is φ = 718294608.

The previous prime is 720642253. The next prime is 720642287. The reversal of 720642283 is 382246027.

720642283 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 382246027 = 31 ⋅12330517.

It is a cyclic number.

It is not a de Polignac number, because 720642283 - 2⁹ = 720641771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720642287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1173378 + ... + 1173991.

It is an arithmetic number, because the mean of its divisors is an integer number (180747490).

Almost surely, 2^720642283 is an apocalyptic number.

720642283 is a deficient number, since it is larger than the sum of its proper divisors (2347677).

720642283 is a wasteful number, since it uses less digits than its factorization.

720642283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347676.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 720642283 is about 26844.7812991650. The cubic root of 720642283 is about 896.5473821474.

It can be divided in two parts, 72064 and 2283, that added together give a palindrome (74347).

The spelling of 720642283 in words is "seven hundred twenty million, six hundred forty-two thousand, two hundred eighty-three".