6409776 has 40 divisors (see below), whose sum is σ = 16967664. Its totient is φ = 2083840.

The previous prime is 6409757. The next prime is 6409807. The reversal of 6409776 is 6779046.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340 + ... + 3596.

Almost surely, 2^6409776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6409776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8483832).

6409776 is an abundant number, since it is smaller than the sum of its proper divisors (10557888).

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

6409776 is a wasteful number, since it uses less digits than its factorization.

6409776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309 (or 3303 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 6409776 is about 2531.7535425076. The cubic root of 6409776 is about 185.7580389445.

The spelling of 6409776 in words is "six million, four hundred nine thousand, seven hundred seventy-six".