6143644 has 12 divisors (see below), whose sum is σ = 11578504. Its totient is φ = 2835504.

The previous prime is 6143639. The next prime is 6143651. The reversal of 6143644 is 4463416.

It is a happy number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 6⁴ + 1 + 4⁶ + 3⁷ + 6⁸ + 4⁹ + 4¹¹ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59022 + ... + 59125.

Almost surely, 2^6143644 is an apocalyptic number.

It is an amenable number.

6143644 is a deficient number, since it is larger than the sum of its proper divisors (5434860).

6143644 is a wasteful number, since it uses less digits than its factorization.

6143644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118164 (or 118162 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 6143644 is about 2478.6375289663. The cubic root of 6143644 is about 183.1507412552.

The spelling of 6143644 in words is "six million, one hundred forty-three thousand, six hundred forty-four".