609771 has 8 divisors (see below), whose sum is σ = 816640. Its totient is φ = 404712.

The previous prime is 609757. The next prime is 609779. The reversal of 609771 is 177906.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 609771 - 2¹¹ = 607723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609779) 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, 1086 + ... + 1548.

It is an arithmetic number, because the mean of its divisors is an integer number (102080).

2⁶⁰⁹⁷⁷¹ is an apocalyptic number.

609771 is a deficient number, since it is larger than the sum of its proper divisors (206869).

609771 is a wasteful number, since it uses less digits than its factorization.

609771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 609771 is about 780.8783516016. The cubic root of 609771 is about 84.7986468130.

The spelling of 609771 in words is "six hundred nine thousand, seven hundred seventy-one".