616009 has 4 divisors (see below), whose sum is σ = 642816. Its totient is φ = 589204.

The previous prime is 616003. The next prime is 616027. The reversal of 616009 is 900616.

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 not a de Polignac number, because 616009 - 2⁹ = 615497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616003) 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, 13369 + ... + 13414.

It is an arithmetic number, because the mean of its divisors is an integer number (160704).

2⁶¹⁶⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

616009 is a deficient number, since it is larger than the sum of its proper divisors (26807).

616009 is a wasteful number, since it uses less digits than its factorization.

616009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26806.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 616009 is about 784.8624083239. The cubic root of 616009 is about 85.0868316822.

The spelling of 616009 in words is "six hundred sixteen thousand, nine".