6468891 has 32 divisors (see below), whose sum is σ = 10741248. Its totient is φ = 3402240.

The previous prime is 6468887. The next prime is 6468907. The reversal of 6468891 is 1988646.

It is not a de Polignac number, because 6468891 - 2² = 6468887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6468811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6850 + ... + 7736.

It is an arithmetic number, because the mean of its divisors is an integer number (335664).

Almost surely, 2^6468891 is an apocalyptic number.

6468891 is a deficient number, since it is larger than the sum of its proper divisors (4272357).

6468891 is a wasteful number, since it uses less digits than its factorization.

6468891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931.

The product of its digits is 82944, while the sum is 42.

The square root of 6468891 is about 2543.4014626087. The cubic root of 6468891 is about 186.3273516221.

The spelling of 6468891 in words is "six million, four hundred sixty-eight thousand, eight hundred ninety-one".