6468989 has 8 divisors (see below), whose sum is σ = 6623832. Its totient is φ = 6315840.

The previous prime is 6468983. The next prime is 6468997. The reversal of 6468989 is 9898646.

It can be written as a sum of positive squares in 4 ways, for example, as 7225 + 6461764 = 85^2 + 2542^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6468989 - 2²⁰ = 5420413 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6468983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10247 + ... + 10859.

It is an arithmetic number, because the mean of its divisors is an integer number (827979).

Almost surely, 2^6468989 is an apocalyptic number.

It is an amenable number.

6468989 is a deficient number, since it is larger than the sum of its proper divisors (154843).

6468989 is a wasteful number, since it uses less digits than its factorization.

6468989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847.

The product of its digits is 746496, while the sum is 50.

The square root of 6468989 is about 2543.4207280747. The cubic root of 6468989 is about 186.3282925349.

The spelling of 6468989 in words is "six million, four hundred sixty-eight thousand, nine hundred eighty-nine".