6419868 has 48 divisors (see below), whose sum is σ = 18439680. Its totient is φ = 1692864.

The previous prime is 6419851. The next prime is 6419879. The reversal of 6419868 is 8689146.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1848 + ... + 4031.

It is an arithmetic number, because the mean of its divisors is an integer number (384160).

Almost surely, 2^6419868 is an apocalyptic number.

It is an amenable number.

6419868 is an abundant number, since it is smaller than the sum of its proper divisors (12019812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6419868 is a wasteful number, since it uses less digits than its factorization.

6419868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5906 (or 5904 counting only the distinct ones).

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

The square root of 6419868 is about 2533.7458436078. The cubic root of 6419868 is about 185.8554779771.

The spelling of 6419868 in words is "six million, four hundred nineteen thousand, eight hundred sixty-eight".