6427609 has 4 divisors (see below), whose sum is σ = 6436260. Its totient is φ = 6418960.

The previous prime is 6427607. The next prime is 6427613. The reversal of 6427609 is 9067246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1265625 + 5161984 = 1125^2 + 2272^2 .

It is a cyclic number.

It is not a de Polignac number, because 6427609 - 2¹ = 6427607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6427607) 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 3 ways as a sum of consecutive naturals, for example, 3094 + ... + 4735.

It is an arithmetic number, because the mean of its divisors is an integer number (1609065).

Almost surely, 2^6427609 is an apocalyptic number.

It is an amenable number.

6427609 is a deficient number, since it is larger than the sum of its proper divisors (8651).

6427609 is an equidigital number, since it uses as much as digits as its factorization.

6427609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8650.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 6427609 is about 2535.2729636077. The cubic root of 6427609 is about 185.9301487431.

The spelling of 6427609 in words is "six million, four hundred twenty-seven thousand, six hundred nine".