6345609 has 4 divisors (see below), whose sum is σ = 8460816. Its totient is φ = 4230404.

The previous prime is 6345551. The next prime is 6345617. The reversal of 6345609 is 9065436.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6345609 - 2⁷ = 6345481 is a prime.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6345609.

It is not an unprimeable number, because it can be changed into a prime (6345629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057599 + ... + 1057604.

It is an arithmetic number, because the mean of its divisors is an integer number (2115204).

Almost surely, 2^6345609 is an apocalyptic number.

It is an amenable number.

6345609 is a deficient number, since it is larger than the sum of its proper divisors (2115207).

6345609 is a wasteful number, since it uses less digits than its factorization.

6345609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115206.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 6345609 is about 2519.0492254023. The cubic root of 6345609 is about 185.1360965923.

The spelling of 6345609 in words is "six million, three hundred forty-five thousand, six hundred nine".