6409968 has 20 divisors (see below), whose sum is σ = 16559208. Its totient is φ = 2136640.

The previous prime is 6409943. The next prime is 6410009. The reversal of 6409968 is 8699046.

It is a super-2 number, since 2×6409968² = 82175379522048, which contains 22 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, 66723 + ... + 66818.

Almost surely, 2^6409968 is an apocalyptic number.

It is an amenable number.

6409968 is an abundant number, since it is smaller than the sum of its proper divisors (10149240).

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

6409968 is a wasteful number, since it uses less digits than its factorization.

6409968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133552 (or 133546 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 6409968 is about 2531.7914606065. The cubic root of 6409968 is about 185.7598936732.

The spelling of 6409968 in words is "six million, four hundred nine thousand, nine hundred sixty-eight".