648242500 has 60 divisors (see below), whose sum is σ = 1425793600. Its totient is φ = 257796000.

The previous prime is 648242461. The next prime is 648242509. The reversal of 648242500 is 5242846.

It is not an unprimeable number, because it can be changed into a prime (648242509) 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 19 ways as a sum of consecutive naturals, for example, 496849 + ... + 498151.

Almost surely, 2^648242500 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 648242500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (712896800).

648242500 is an abundant number, since it is smaller than the sum of its proper divisors (777551100).

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

648242500 is a wasteful number, since it uses less digits than its factorization.

648242500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526 (or 1509 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 648242500 is about 25460.6068270181. The cubic root of 648242500 is about 865.4576748701.

The spelling of 648242500 in words is "six hundred forty-eight million, two hundred forty-two thousand, five hundred".