616722289 has 8 divisors (see below), whose sum is σ = 621824000. Its totient is φ = 611630352.

The previous prime is 616722283. The next prime is 616722331. The reversal of 616722289 is 982227616.

616722289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 616722289 - 2¹⁹ = 616198001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616722283) 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, 176047 + ... + 179515.

It is an arithmetic number, because the mean of its divisors is an integer number (77728000).

Almost surely, 2^616722289 is an apocalyptic number.

It is an amenable number.

616722289 is a deficient number, since it is larger than the sum of its proper divisors (5101711).

616722289 is a wasteful number, since it uses less digits than its factorization.

616722289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4887.

The product of its digits is 145152, while the sum is 43.

The square root of 616722289 is about 24833.8939556405. The cubic root of 616722289 is about 851.1966025603.

The spelling of 616722289 in words is "six hundred sixteen million, seven hundred twenty-two thousand, two hundred eighty-nine".