6144987 has 4 divisors (see below), whose sum is σ = 8193320. Its totient is φ = 4096656.

The previous prime is 6144977. The next prime is 6144989. The reversal of 6144987 is 7894416.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6144987 - 2²⁰ = 5096411 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6144989) 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, 1024162 + ... + 1024167.

It is an arithmetic number, because the mean of its divisors is an integer number (2048330).

Almost surely, 2^6144987 is an apocalyptic number.

6144987 is a deficient number, since it is larger than the sum of its proper divisors (2048333).

6144987 is a wasteful number, since it uses less digits than its factorization.

6144987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048332.

The product of its digits is 48384, while the sum is 39.

The square root of 6144987 is about 2478.9084291276. The cubic root of 6144987 is about 183.1640858612.

The spelling of 6144987 in words is "six million, one hundred forty-four thousand, nine hundred eighty-seven".