6646329 has 12 divisors (see below), whose sum is σ = 9627696. Its totient is φ = 4418232.

The previous prime is 6646319. The next prime is 6646331. The reversal of 6646329 is 9236466.

6646329 is a `hidden beast` number, since 6 + 646 + 3 + 2 + 9 = 666.

It is not a de Polignac number, because 6646329 - 2⁴ = 6646313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6646293 and 6646302.

It is not an unprimeable number, because it can be changed into a prime (6646309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3154 + ... + 4820.

It is an arithmetic number, because the mean of its divisors is an integer number (802308).

Almost surely, 2^6646329 is an apocalyptic number.

It is an amenable number.

6646329 is a deficient number, since it is larger than the sum of its proper divisors (2981367).

6646329 is a wasteful number, since it uses less digits than its factorization.

6646329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116 (or 2113 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 6646329 is about 2578.0475170175. The cubic root of 6646329 is about 188.0156260589.

The spelling of 6646329 in words is "six million, six hundred forty-six thousand, three hundred twenty-nine".