648338600 has 192 divisors, whose sum is σ = 1895712000. Its totient is φ = 204906240.

The previous prime is 648338569. The next prime is 648338609. The reversal of 648338600 is 6833846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648338609) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 891437 + ... + 892163.

It is an arithmetic number, because the mean of its divisors is an integer number (9873500).

Almost surely, 2^648338600 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 648338600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (947856000).

648338600 is an abundant number, since it is smaller than the sum of its proper divisors (1247373400).

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

648338600 is a wasteful number, since it uses less digits than its factorization.

648338600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 648338600 is about 25462.4939862536. The cubic root of 648338600 is about 865.5004399223.

The spelling of 648338600 in words is "six hundred forty-eight million, three hundred thirty-eight thousand, six hundred".