648216 has 32 divisors (see below), whose sum is σ = 1801200. Its totient is φ = 216000.

The previous prime is 648211. The next prime is 648217. The reversal of 648216 is 612846.

648216 is a `hidden beast` number, since 648 + 2 + 16 = 666.

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.

It is a self number, because there is not a number n which added to its sum of digits gives 648216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1285 + ... + 1716.

2⁶⁴⁸²¹⁶ is an apocalyptic number.

It is an amenable number.

648216 is an abundant number, since it is smaller than the sum of its proper divisors (1152984).

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

648216 is a wasteful number, since it uses less digits than its factorization.

648216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016 (or 3006 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 648216 is about 805.1186248001. The cubic root of 648216 is about 86.5445881474.

The spelling of 648216 in words is "six hundred forty-eight thousand, two hundred sixteen".