6434644 has 6 divisors (see below), whose sum is σ = 11260634. Its totient is φ = 3217320.

The previous prime is 6434627. The next prime is 6434647. The reversal of 6434644 is 4464346.

6434644 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4579600 + 1855044 = 2140^2 + 1362^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6434647) 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 as a sum of consecutive naturals, namely, 804327 + ... + 804334.

Almost surely, 2^6434644 is an apocalyptic number.

It is an amenable number.

6434644 is a deficient number, since it is larger than the sum of its proper divisors (4825990).

6434644 is a wasteful number, since it uses less digits than its factorization.

6434644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608665 (or 1608663 counting only the distinct ones).

The product of its digits is 27648, while the sum is 31.

The square root of 6434644 is about 2536.6600087517. The cubic root of 6434644 is about 185.9979573522.

The spelling of 6434644 in words is "six million, four hundred thirty-four thousand, six hundred forty-four".