609555 has 8 divisors (see below), whose sum is σ = 975312. Its totient is φ = 325088.

The previous prime is 609541. The next prime is 609571. The reversal of 609555 is 555906.

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 not a de Polignac number, because 609555 - 2⁹ = 609043 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20304 + ... + 20333.

It is an arithmetic number, because the mean of its divisors is an integer number (121914).

2⁶⁰⁹⁵⁵⁵ is an apocalyptic number.

609555 is a deficient number, since it is larger than the sum of its proper divisors (365757).

609555 is a wasteful number, since it uses less digits than its factorization.

609555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40645.

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 609555 is about 780.7400335579. The cubic root of 609555 is about 84.7886328510.

The spelling of 609555 in words is "six hundred nine thousand, five hundred fifty-five".