6396609 has 16 divisors (see below), whose sum is σ = 8732672. Its totient is φ = 4164048.

The previous prime is 6396589. The next prime is 6396613. The reversal of 6396609 is 9066936.

It is not a de Polignac number, because 6396609 - 2¹² = 6392513 is a prime.

It is a Duffinian number.

6396609 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6396619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39162 + ... + 39324.

It is an arithmetic number, because the mean of its divisors is an integer number (545792).

Almost surely, 2^6396609 is an apocalyptic number.

It is an amenable number.

6396609 is a deficient number, since it is larger than the sum of its proper divisors (2336063).

6396609 is a wasteful number, since it uses less digits than its factorization.

6396609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 6396609 is about 2529.1518341136. The cubic root of 6396609 is about 185.6307566603.

The spelling of 6396609 in words is "six million, three hundred ninety-six thousand, six hundred nine".