720816206 has 16 divisors (see below), whose sum is σ = 1180752768. Its totient is φ = 327300600.

The previous prime is 720816197. The next prime is 720816209. The reversal of 720816206 is 602618027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720816209) 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, 4961 + ... + 38291.

It is an arithmetic number, because the mean of its divisors is an integer number (73797048).

Almost surely, 2^720816206 is an apocalyptic number.

720816206 is a deficient number, since it is larger than the sum of its proper divisors (459936562).

720816206 is a wasteful number, since it uses less digits than its factorization.

720816206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34327.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 720816206 is about 26848.0205229361. The cubic root of 720816206 is about 896.6195019176.

It can be divided in two parts, 72081 and 6206, that added together give a palindrome (78287).

The spelling of 720816206 in words is "seven hundred twenty million, eight hundred sixteen thousand, two hundred six".