609553 has 12 divisors (see below), whose sum is σ = 732928. Its totient is φ = 496080.

The previous prime is 609541. The next prime is 609571. The reversal of 609553 is 355906.

It is a happy number.

It is not a de Polignac number, because 609553 - 2¹⁷ = 478481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (609503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11475 + ... + 11527.

2⁶⁰⁹⁵⁵³ is an apocalyptic number.

It is an amenable number.

609553 is a deficient number, since it is larger than the sum of its proper divisors (123375).

609553 is an equidigital number, since it uses as much as digits as its factorization.

609553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 609553 is about 780.7387527208. The cubic root of 609553 is about 84.7885401180.

The spelling of 609553 in words is "six hundred nine thousand, five hundred fifty-three".