6432816 has 80 divisors (see below), whose sum is σ = 18297440. Its totient is φ = 1946880.

The previous prime is 6432799. The next prime is 6432827. The reversal of 6432816 is 6182346.

It is a super-2 number, since 2×6432816² = 82762243379712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105426 + ... + 105486.

It is an arithmetic number, because the mean of its divisors is an integer number (228718).

Almost surely, 2^6432816 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 6432816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9148720).

6432816 is an abundant number, since it is smaller than the sum of its proper divisors (11864624).

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

6432816 is a wasteful number, since it uses less digits than its factorization.

6432816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 79 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 6432816 is about 2536.2996668375. The cubic root of 6432816 is about 185.9803424711.

The spelling of 6432816 in words is "six million, four hundred thirty-two thousand, eight hundred sixteen".