6387658 has 8 divisors (see below), whose sum is σ = 9593028. Its totient is φ = 3189984.

The previous prime is 6387653. The next prime is 6387673. The reversal of 6387658 is 8567836.

It can be written as a sum of positive squares in 2 ways, for example, as 5049009 + 1338649 = 2247^2 + 1157^2 .

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

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (6387653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110 + ... + 3742.

Almost surely, 2^6387658 is an apocalyptic number.

6387658 is a deficient number, since it is larger than the sum of its proper divisors (3205370).

6387658 is a wasteful number, since it uses less digits than its factorization.

6387658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848.

The product of its digits is 241920, while the sum is 43.

The square root of 6387658 is about 2527.3816490590. The cubic root of 6387658 is about 185.5441296917.

The spelling of 6387658 in words is "six million, three hundred eighty-seven thousand, six hundred fifty-eight".