648302840 has 64 divisors (see below), whose sum is σ = 1537392960. Its totient is φ = 245555200.

The previous prime is 648302839. The next prime is 648302843. The reversal of 648302840 is 48203846.

It is a self number, because there is not a number n which added to its sum of digits gives 648302840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648302843) 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 15 ways as a sum of consecutive naturals, for example, 89432 + ... + 96408.

It is an arithmetic number, because the mean of its divisors is an integer number (24021765).

Almost surely, 2^648302840 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 648302840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (768696480).

648302840 is an abundant number, since it is smaller than the sum of its proper divisors (889090120).

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

648302840 is a wasteful number, since it uses less digits than its factorization.

648302840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7112 (or 7108 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 648302840 is about 25461.7917672736. The cubic root of 648302840 is about 865.4845270105.

The spelling of 648302840 in words is "six hundred forty-eight million, three hundred two thousand, eight hundred forty".