6775609 has 9 divisors (see below), whose sum is σ = 7203567.
Its totient is φ = 6372144.
The previous prime is 6775607. The next prime is 6775627. The reversal of 6775609 is 9065776.
The square root of 6775609 is 2603.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 3980025 + 2795584 = 1995^2 + 1672^2
It is not a de Polignac number, because 6775609 - 21 = 6775607 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (6775603) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 49389 + ... + 49525.
Almost surely, 26775609 is an apocalyptic number.
6775609 is the 2603-rd square number.
6775609 is the 1302-nd centered octagonal number.
It is an amenable number.
6775609 is a deficient number, since it is larger than the sum of its proper divisors (427958).
6775609 is an equidigital number, since it uses as much as digits as its factorization.
6775609 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 312 (or 156 counting only the distinct ones).
The product of its (nonzero) digits is 79380, while the sum is 40.
The cubic root of 6775609 is about 189.2268582241.
The spelling of 6775609 in words is "six million, seven hundred seventy-five thousand, six hundred nine".