648824 has 32 divisors (see below), whose sum is σ = 1358640. Its totient is φ = 288000.

The previous prime is 648803. The next prime is 648841. The reversal of 648824 is 428846.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6374 + ... + 6474.

2⁶⁴⁸⁸²⁴ 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 648824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679320).

648824 is an abundant number, since it is smaller than the sum of its proper divisors (709816).

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

648824 is a wasteful number, since it uses less digits than its factorization.

648824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 187 counting only the distinct ones).

The product of its digits is 12288, while the sum is 32.

The square root of 648824 is about 805.4961204128. The cubic root of 648824 is about 86.5716381157.

It can be divided in two parts, 64 and 8824, that added together give a palindrome (8888).

The spelling of 648824 in words is "six hundred forty-eight thousand, eight hundred twenty-four".