609777 has 12 divisors (see below), whose sum is σ = 1006720. Its totient is φ = 348408.

The previous prime is 609757. The next prime is 609779. The reversal of 609777 is 777906.

It is not a de Polignac number, because 609777 - 2¹⁵ = 577009 is a prime.

It is a Duffinian number.

609777 is a modest number, since divided by 777 gives 609 as remainder.

It is not an unprimeable number, because it can be changed into a prime (609779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4777 + ... + 4902.

2⁶⁰⁹⁷⁷⁷ is an apocalyptic number.

It is an amenable number.

609777 is a deficient number, since it is larger than the sum of its proper divisors (396943).

609777 is a wasteful number, since it uses less digits than its factorization.

609777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9692 (or 9689 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 36.

The square root of 609777 is about 780.8821934197. The cubic root of 609777 is about 84.7989249448.

The spelling of 609777 in words is "six hundred nine thousand, seven hundred seventy-seven".