6647601 has 4 divisors (see below), whose sum is σ = 8863472. Its totient is φ = 4431732.

The previous prime is 6647593. The next prime is 6647623. The reversal of 6647601 is 1067466.

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 not a de Polignac number, because 6647601 - 2³ = 6647593 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6647681) 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 3 ways as a sum of consecutive naturals, for example, 1107931 + ... + 1107936.

It is an arithmetic number, because the mean of its divisors is an integer number (2215868).

Almost surely, 2^6647601 is an apocalyptic number.

It is an amenable number.

6647601 is a deficient number, since it is larger than the sum of its proper divisors (2215871).

6647601 is a wasteful number, since it uses less digits than its factorization.

6647601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215870.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 6647601 is about 2578.2942035385. The cubic root of 6647601 is about 188.0276196783.

The spelling of 6647601 in words is "six million, six hundred forty-seven thousand, six hundred one".