648612 has 36 divisors (see below), whose sum is σ = 1681680. Its totient is φ = 210672.

The previous prime is 648607. The next prime is 648617. The reversal of 648612 is 216846.

648612 is a `hidden beast` number, since 6 + 48 + 612 = 666.

648612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (648607) and next prime (648617).

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (648617) by changing a digit.

648612 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1339 + ... + 1757.

2⁶⁴⁸⁶¹² 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 648612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (840840).

648612 is an abundant number, since it is smaller than the sum of its proper divisors (1033068).

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

648612 is a wasteful number, since it uses less digits than its factorization.

648612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 467 counting only the distinct ones).

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

The square root of 648612 is about 805.3645137452. The cubic root of 648612 is about 86.5622081385.

The spelling of 648612 in words is "six hundred forty-eight thousand, six hundred twelve".