6144639 has 8 divisors (see below), whose sum is σ = 8367360. Its totient is φ = 4009176.

The previous prime is 6144583. The next prime is 6144647. The reversal of 6144639 is 9364416.

6144639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6144639 - 2²¹ = 4047487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6144679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21649 + ... + 21930.

It is an arithmetic number, because the mean of its divisors is an integer number (1045920).

Almost surely, 2^6144639 is an apocalyptic number.

6144639 is a deficient number, since it is larger than the sum of its proper divisors (2222721).

6144639 is a wasteful number, since it uses less digits than its factorization.

6144639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43629.

The product of its digits is 15552, while the sum is 33.

The square root of 6144639 is about 2478.8382359484. The cubic root of 6144639 is about 183.1606281752.

It can be divided in two parts, 614 and 4639, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 6144639 in words is "six million, one hundred forty-four thousand, six hundred thirty-nine".