609291 has 6 divisors (see below), whose sum is σ = 880100. Its totient is φ = 406188.

The previous prime is 609289. The next prime is 609307. The reversal of 609291 is 192906.

It is a happy number.

It is not a de Polignac number, because 609291 - 2¹ = 609289 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33841 + ... + 33858.

2⁶⁰⁹²⁹¹ is an apocalyptic number.

609291 is a deficient number, since it is larger than the sum of its proper divisors (270809).

609291 is a wasteful number, since it uses less digits than its factorization.

609291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67705 (or 67702 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 609291 is about 780.5709448859. The cubic root of 609291 is about 84.7763903509.

It can be divided in two parts, 609 and 291, that added together give a square (900 = 30²).

The spelling of 609291 in words is "six hundred nine thousand, two hundred ninety-one".