6216912 has 140 divisors (see below), whose sum is σ = 19923204. Its totient is φ = 1866240.

The previous prime is 6216893. The next prime is 6216913. The reversal of 6216912 is 2196126.

It can be written as a sum of positive squares in 2 ways, for example, as 571536 + 5645376 = 756^2 + 2376^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6216913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 151612 + ... + 151652.

Almost surely, 2^6216912 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 6216912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9961602).

6216912 is an abundant number, since it is smaller than the sum of its proper divisors (13706292).

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

6216912 is a wasteful number, since it uses less digits than its factorization.

6216912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 59 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 6216912 is about 2493.3736182129. The cubic root of 6216912 is about 183.8759403177.

The spelling of 6216912 in words is "six million, two hundred sixteen thousand, nine hundred twelve".