6317989 has 4 divisors (see below), whose sum is σ = 6325324. Its totient is φ = 6310656.

The previous prime is 6317963. The next prime is 6318001. The reversal of 6317989 is 9897136.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3940225 + 2377764 = 1985^2 + 1542^2 .

It is a cyclic number.

It is not a de Polignac number, because 6317989 - 2⁵ = 6317957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6317929) 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, 2172 + ... + 4165.

It is an arithmetic number, because the mean of its divisors is an integer number (1581331).

Almost surely, 2^6317989 is an apocalyptic number.

It is an amenable number.

6317989 is a deficient number, since it is larger than the sum of its proper divisors (7335).

6317989 is an equidigital number, since it uses as much as digits as its factorization.

6317989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7334.

The product of its digits is 81648, while the sum is 43.

The square root of 6317989 is about 2513.5610197487. The cubic root of 6317989 is about 184.8670971443.

The spelling of 6317989 in words is "six million, three hundred seventeen thousand, nine hundred eighty-nine".