6441587 has 4 divisors (see below), whose sum is σ = 6721680. Its totient is φ = 6161496.

The previous prime is 6441577. The next prime is 6441601. The reversal of 6441587 is 7851446.

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

It is a cyclic number.

It is not a de Polignac number, because 6441587 - 2⁴ = 6441571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6441527) 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 in 3 ways as a sum of consecutive naturals, for example, 140012 + ... + 140057.

It is an arithmetic number, because the mean of its divisors is an integer number (1680420).

Almost surely, 2^6441587 is an apocalyptic number.

6441587 is a deficient number, since it is larger than the sum of its proper divisors (280093).

6441587 is a wasteful number, since it uses less digits than its factorization.

6441587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280092.

The product of its digits is 26880, while the sum is 35.

The square root of 6441587 is about 2538.0281716325. The cubic root of 6441587 is about 186.0648307554.

The spelling of 6441587 in words is "six million, four hundred forty-one thousand, five hundred eighty-seven".