609841 has 8 divisors (see below), whose sum is σ = 668520. Its totient is φ = 553728.

The previous prime is 609821. The next prime is 609859. The reversal of 609841 is 148906.

It can be written as a sum of positive squares in 4 ways, for example, as 245025 + 364816 = 495^2 + 604^2 .

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 609841 - 2⁵ = 609809 is a prime.

It is a Duffinian number.

609841 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126 + ... + 1111.

It is an arithmetic number, because the mean of its divisors is an integer number (83565).

2⁶⁰⁹⁸⁴¹ is an apocalyptic number.

It is an amenable number.

609841 is a deficient number, since it is larger than the sum of its proper divisors (58679).

609841 is a wasteful number, since it uses less digits than its factorization.

609841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 609841 is about 780.9231716373. The cubic root of 609841 is about 84.8018915711.

The spelling of 609841 in words is "six hundred nine thousand, eight hundred forty-one".