6441620 has 48 divisors (see below), whose sum is σ = 14152320. Its totient is φ = 2461056.

The previous prime is 6441607. The next prime is 6441629. The reversal of 6441620 is 261446.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6441629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62489 + ... + 62591.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

Almost surely, 2^6441620 is an apocalyptic number.

It is an amenable number.

6441620 is an abundant number, since it is smaller than the sum of its proper divisors (7710700).

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

6441620 is a wasteful number, since it uses less digits than its factorization.

6441620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 6441620 is about 2538.0346727340. The cubic root of 6441620 is about 186.0651484891.

The spelling of 6441620 in words is "six million, four hundred forty-one thousand, six hundred twenty".