609623 has 8 divisors (see below), whose sum is σ = 706848. Its totient is φ = 514944.

The previous prime is 609619. The next prime is 609641. The reversal of 609623 is 326906.

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 609623 - 2² = 609619 is a prime.

It is a fibodiv number, since the Fibonacci-like sequence with seeds 609 and 623 contains 609623 itself.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 609592 and 609601.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86 + ... + 1107.

It is an arithmetic number, because the mean of its divisors is an integer number (88356).

2⁶⁰⁹⁶²³ is an apocalyptic number.

609623 is a deficient number, since it is larger than the sum of its proper divisors (97225).

609623 is a wasteful number, since it uses less digits than its factorization.

609623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 609623 is about 780.7835807700. The cubic root of 609623 is about 84.7917856497.

The spelling of 609623 in words is "six hundred nine thousand, six hundred twenty-three".