6219644 has 12 divisors (see below), whose sum is σ = 10902864. Its totient is φ = 3104544.

The previous prime is 6219643. The next prime is 6219667. The reversal of 6219644 is 4469126.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6219644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6219643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2672 + ... + 4424.

It is an arithmetic number, because the mean of its divisors is an integer number (908572).

Almost surely, 2^6219644 is an apocalyptic number.

It is an amenable number.

6219644 is a deficient number, since it is larger than the sum of its proper divisors (4683220).

6219644 is a wasteful number, since it uses less digits than its factorization.

6219644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644 (or 2642 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 6219644 is about 2493.9214101491. The cubic root of 6219644 is about 183.9028709172.

The spelling of 6219644 in words is "six million, two hundred nineteen thousand, six hundred forty-four".