648576 has 48 divisors (see below), whose sum is σ = 1869660. Its totient is φ = 215808.

The previous prime is 648563. The next prime is 648607. The reversal of 648576 is 675846.

It is a happy number.

648576 is a `hidden beast` number, since 648 + 5 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 648576.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 871 + ... + 1433.

2⁶⁴⁸⁵⁷⁶ 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 648576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (934830).

648576 is an abundant number, since it is smaller than the sum of its proper divisors (1221084).

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

648576 is a wasteful number, since it uses less digits than its factorization.

648576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 568 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 648576 is about 805.3421633070. The cubic root of 648576 is about 86.5606066175.

It can be divided in two parts, 6485 and 76, that added together give a 8-th power (6561 = 3⁸).

The spelling of 648576 in words is "six hundred forty-eight thousand, five hundred seventy-six".