648075500 has 48 divisors (see below), whose sum is σ = 1425060000. Its totient is φ = 257460800.

The previous prime is 648075469. The next prime is 648075521. The reversal of 648075500 is 5570846.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70151 + ... + 78849.

It is an arithmetic number, because the mean of its divisors is an integer number (29688750).

Almost surely, 2^648075500 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 648075500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (712530000).

648075500 is an abundant number, since it is smaller than the sum of its proper divisors (776984500).

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

648075500 is a wasteful number, since it uses less digits than its factorization.

648075500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8867 (or 8855 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 648075500 is about 25457.3270395774. The cubic root of 648075500 is about 865.3833488554.

It can be divided in two parts, 64807 and 5500, that added together give a palindrome (70307).

The spelling of 648075500 in words is "six hundred forty-eight million, seventy-five thousand, five hundred".