6426816 has 112 divisors (see below), whose sum is σ = 19751040. Its totient is φ = 1822720.

The previous prime is 6426809. The next prime is 6426851. The reversal of 6426816 is 6186246.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35815 + ... + 35993.

Almost surely, 2^6426816 is an apocalyptic number.

6426816 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6426816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9875520).

6426816 is an abundant number, since it is smaller than the sum of its proper divisors (13324224).

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

6426816 is a wasteful number, since it uses less digits than its factorization.

6426816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 212 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 6426816 is about 2535.1165653674. The cubic root of 6426816 is about 185.9225021116.

The spelling of 6426816 in words is "six million, four hundred twenty-six thousand, eight hundred sixteen".