6215444 has 12 divisors (see below), whose sum is σ = 10899924. Its totient is φ = 3101184.

The previous prime is 6215441. The next prime is 6215449. The reversal of 6215444 is 4445126.

It can be written as a sum of positive squares in 2 ways, for example, as 4892944 + 1322500 = 2212^2 + 1150^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6215441) 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 3 ways as a sum of consecutive naturals, for example, 962 + ... + 3654.

It is an arithmetic number, because the mean of its divisors is an integer number (908327).

Almost surely, 2^6215444 is an apocalyptic number.

It is an amenable number.

6215444 is a deficient number, since it is larger than the sum of its proper divisors (4684480).

6215444 is a wasteful number, since it uses less digits than its factorization.

6215444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274 (or 3272 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 6215444 is about 2493.0792205624. The cubic root of 6215444 is about 183.8614662975.

The spelling of 6215444 in words is "six million, two hundred fifteen thousand, four hundred forty-four".