648321024 has 96 divisors (see below), whose sum is σ = 1861619760. Its totient is φ = 199458816.

The previous prime is 648321017. The next prime is 648321043. The reversal of 648321024 is 420123846.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 648320982 and 648321000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75814 + ... + 83930.

Almost surely, 2^648321024 is an apocalyptic number.

648321024 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648321024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (930809880).

648321024 is an abundant number, since it is smaller than the sum of its proper divisors (1213298736).

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

648321024 is a wasteful number, since it uses less digits than its factorization.

648321024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155 (or 8135 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 648321024 is about 25462.1488488305. The cubic root of 648321024 is about 865.4926188171.

It can be divided in two parts, 64832 and 1024, that added together give a palindrome (65856).

The spelling of 648321024 in words is "six hundred forty-eight million, three hundred twenty-one thousand, twenty-four".