648673760 has 288 divisors, whose sum is σ = 1960858368. Its totient is φ = 201277440.

The previous prime is 648673759. The next prime is 648673763. The reversal of 648673760 is 67376846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648673763) 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, 4131602 + ... + 4131758.

It is an arithmetic number, because the mean of its divisors is an integer number (6808536).

Almost surely, 2^648673760 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 648673760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980429184).

648673760 is an abundant number, since it is smaller than the sum of its proper divisors (1312184608).

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

648673760 is a wasteful number, since it uses less digits than its factorization.

648673760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 47.

The square root of 648673760 is about 25469.0745807538. The cubic root of 648673760 is about 865.6495549864.

The spelling of 648673760 in words is "six hundred forty-eight million, six hundred seventy-three thousand, seven hundred sixty".