6419864 has 16 divisors (see below), whose sum is σ = 13131720. Its totient is φ = 2918080.

The previous prime is 6419851. The next prime is 6419879. The reversal of 6419864 is 4689146.

It is a super-3 number, since 3×6419864³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36389 + ... + 36564.

Almost surely, 2^6419864 is an apocalyptic number.

It is an amenable number.

6419864 is an abundant number, since it is smaller than the sum of its proper divisors (6711856).

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

6419864 is a wasteful number, since it uses less digits than its factorization.

6419864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72970 (or 72966 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 6419864 is about 2533.7450542626. The cubic root of 6419864 is about 185.8554393770.

The spelling of 6419864 in words is "six million, four hundred nineteen thousand, eight hundred sixty-four".