616622009 has 4 divisors (see below), whose sum is σ = 618249360. Its totient is φ = 614994660.

The previous prime is 616622003. The next prime is 616622033. The reversal of 616622009 is 900226616.

616622009 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616622009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616622003) 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, 813107 + ... + 813864.

It is an arithmetic number, because the mean of its divisors is an integer number (154562340).

Almost surely, 2^616622009 is an apocalyptic number.

It is an amenable number.

616622009 is a deficient number, since it is larger than the sum of its proper divisors (1627351).

616622009 is a wasteful number, since it uses less digits than its factorization.

616622009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627350.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 616622009 is about 24831.8748587375. The cubic root of 616622009 is about 851.1504647640.

The spelling of 616622009 in words is "six hundred sixteen million, six hundred twenty-two thousand, nine".