609845 has 8 divisors (see below), whose sum is σ = 763776. Its totient is φ = 466576.

The previous prime is 609821. The next prime is 609859. The reversal of 609845 is 548906.

609845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 609845 - 2⁶ = 609781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 609845.

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, 2537 + ... + 2766.

It is an arithmetic number, because the mean of its divisors is an integer number (95472).

2⁶⁰⁹⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

609845 is a deficient number, since it is larger than the sum of its proper divisors (153931).

609845 is a wasteful number, since it uses less digits than its factorization.

609845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5331.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 609845 is about 780.9257327045. The cubic root of 609845 is about 84.8020769783.

It can be divided in two parts, 609 and 845, that multiplied together give a triangular number (514605 = T₁₀₁₄).

The spelling of 609845 in words is "six hundred nine thousand, eight hundred forty-five".