609578 has 4 divisors (see below), whose sum is σ = 914370. Its totient is φ = 304788.

The previous prime is 609571. The next prime is 609589. The reversal of 609578 is 875906.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 875906 = 2 ⋅437953.

It can be written as a sum of positive squares in only one way, i.e., 418609 + 190969 = 647^2 + 437^2 .

It is not an unprimeable number, because it can be changed into a prime (609571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152393 + ... + 152396.

2⁶⁰⁹⁵⁷⁸ is an apocalyptic number.

609578 is a deficient number, since it is larger than the sum of its proper divisors (304792).

609578 is a wasteful number, since it uses less digits than its factorization.

609578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304791.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 609578 is about 780.7547630338. The cubic root of 609578 is about 84.7896992650.

The spelling of 609578 in words is "six hundred nine thousand, five hundred seventy-eight".