617609 has 8 divisors (see below), whose sum is σ = 646272. Its totient is φ = 589680.

The previous prime is 617587. The next prime is 617647. The reversal of 617609 is 906716.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-617609 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 617609.

It is not an unprimeable number, because it can be changed into a prime (617689) 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, 2144 + ... + 2414.

It is an arithmetic number, because the mean of its divisors is an integer number (80784).

2⁶¹⁷⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

617609 is a deficient number, since it is larger than the sum of its proper divisors (28663).

617609 is a wasteful number, since it uses less digits than its factorization.

617609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 617609 is about 785.8810342539. The cubic root of 617609 is about 85.1604351701.

The spelling of 617609 in words is "six hundred seventeen thousand, six hundred nine".