6641385 has 16 divisors (see below), whose sum is σ = 10886400. Its totient is φ = 3455360.

The previous prime is 6641381. The next prime is 6641387. The reversal of 6641385 is 5831466.

It is not a de Polignac number, because 6641385 - 2² = 6641381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6641381) 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 15 ways as a sum of consecutive naturals, for example, 4785 + ... + 6014.

It is an arithmetic number, because the mean of its divisors is an integer number (680400).

Almost surely, 2^6641385 is an apocalyptic number.

It is an amenable number.

6641385 is a deficient number, since it is larger than the sum of its proper divisors (4245015).

6641385 is a wasteful number, since it uses less digits than its factorization.

6641385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10848.

The product of its digits is 17280, while the sum is 33.

The square root of 6641385 is about 2577.0884734522. The cubic root of 6641385 is about 187.9689948114.

The spelling of 6641385 in words is "six million, six hundred forty-one thousand, three hundred eighty-five".