6468890 has 8 divisors (see below), whose sum is σ = 11644020. Its totient is φ = 2587552.

The previous prime is 6468887. The next prime is 6468907. The reversal of 6468890 is 988646.

It can be written as a sum of positive squares in 2 ways, for example, as 6165289 + 303601 = 2483^2 + 551^2 .

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

It is a Curzon number.

It is an unprimeable number.

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, 323435 + ... + 323454.

Almost surely, 2^6468890 is an apocalyptic number.

6468890 is a deficient number, since it is larger than the sum of its proper divisors (5175130).

6468890 is a wasteful number, since it uses less digits than its factorization.

6468890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646896.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 6468890 is about 2543.4012660215. The cubic root of 6468890 is about 186.3273420209.

The spelling of 6468890 in words is "six million, four hundred sixty-eight thousand, eight hundred ninety".