6321648 has 20 divisors (see below), whose sum is σ = 16331048. Its totient is φ = 2107200.

The previous prime is 6321647. The next prime is 6321677. The reversal of 6321648 is 8461236.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6321643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65803 + ... + 65898.

Almost surely, 2^6321648 is an apocalyptic number.

It is an amenable number.

6321648 is an abundant number, since it is smaller than the sum of its proper divisors (10009400).

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

6321648 is a wasteful number, since it uses less digits than its factorization.

6321648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131712 (or 131706 counting only the distinct ones).

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

The square root of 6321648 is about 2514.2887662319. The cubic root of 6321648 is about 184.9027782325.

The spelling of 6321648 in words is "six million, three hundred twenty-one thousand, six hundred forty-eight".