6441906 has 8 divisors (see below), whose sum is σ = 12883824. Its totient is φ = 2147300.

The previous prime is 6441899. The next prime is 6441907. The reversal of 6441906 is 6091446.

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

6441906 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6441907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536820 + ... + 536831.

It is an arithmetic number, because the mean of its divisors is an integer number (1610478).

Almost surely, 2^6441906 is an apocalyptic number.

6441906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6441906 is a wasteful number, since it uses less digits than its factorization.

6441906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073656.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 6441906 is about 2538.0910149165. The cubic root of 6441906 is about 186.0679021362.

The spelling of 6441906 in words is "six million, four hundred forty-one thousand, nine hundred six".