6481868 has 6 divisors (see below), whose sum is σ = 11343276. Its totient is φ = 3240932.

The previous prime is 6481861. The next prime is 6481873. The reversal of 6481868 is 8681846.

It is a super-2 number, since 2×6481868² = 84029225538848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6481861) 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 as a sum of consecutive naturals, namely, 810230 + ... + 810237.

It is an arithmetic number, because the mean of its divisors is an integer number (1890546).

Almost surely, 2^6481868 is an apocalyptic number.

It is an amenable number.

6481868 is a deficient number, since it is larger than the sum of its proper divisors (4861408).

6481868 is a wasteful number, since it uses less digits than its factorization.

6481868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620471 (or 1620469 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 6481868 is about 2545.9512956850. The cubic root of 6481868 is about 186.4518631741.

The spelling of 6481868 in words is "six million, four hundred eighty-one thousand, eight hundred sixty-eight".