6647345 has 8 divisors (see below), whose sum is σ = 8323776. Its totient is φ = 5086576.

The previous prime is 6647339. The next prime is 6647363. The reversal of 6647345 is 5437466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6647345 - 2⁸ = 6647089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28787 + ... + 29016.

It is an arithmetic number, because the mean of its divisors is an integer number (1040472).

Almost surely, 2^6647345 is an apocalyptic number.

It is an amenable number.

6647345 is a deficient number, since it is larger than the sum of its proper divisors (1676431).

6647345 is a wasteful number, since it uses less digits than its factorization.

6647345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57831.

The product of its digits is 60480, while the sum is 35.

The square root of 6647345 is about 2578.2445578339. The cubic root of 6647345 is about 188.0252059911.

The spelling of 6647345 in words is "six million, six hundred forty-seven thousand, three hundred forty-five".