609633 has 16 divisors (see below), whose sum is σ = 919360. Its totient is φ = 399168.

The previous prime is 609619. The next prime is 609641. The reversal of 609633 is 336906.

It is not a de Polignac number, because 609633 - 2⁴ = 609617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 609597 and 609606.

It is not an unprimeable number, because it can be changed into a prime (609613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1641 + ... + 1977.

It is an arithmetic number, because the mean of its divisors is an integer number (57460).

2⁶⁰⁹⁶³³ is an apocalyptic number.

It is an amenable number.

609633 is a deficient number, since it is larger than the sum of its proper divisors (309727).

609633 is a wasteful number, since it uses less digits than its factorization.

609633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 609633 is about 780.7899845669. The cubic root of 609633 is about 84.7922492768.

The spelling of 609633 in words is "six hundred nine thousand, six hundred thirty-three".