648358004 has 36 divisors (see below), whose sum is σ = 1328789700. Its totient is φ = 276002832.

The previous prime is 648358003. The next prime is 648358043. The reversal of 648358004 is 400853846.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 43296400 + 605061604 = 6580^2 + 24598^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648358003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4351322 + ... + 4351470.

It is an arithmetic number, because the mean of its divisors is an integer number (36910825).

Almost surely, 2^648358004 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 648358004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664394850).

648358004 is an abundant number, since it is smaller than the sum of its proper divisors (680431696).

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

648358004 is an frugal number, since it uses more digits than its factorization.

648358004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 648358004 is about 25462.8750144205. The cubic root of 648358004 is about 865.5090743010.

The spelling of 648358004 in words is "six hundred forty-eight million, three hundred fifty-eight thousand, four".