648134860 has 48 divisors (see below), whose sum is σ = 1461499200. Its totient is φ = 240558080.

The previous prime is 648134801. The next prime is 648134863. The reversal of 648134860 is 68431846.

It is not an unprimeable number, because it can be changed into a prime (648134863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10716 + ... + 37564.

It is an arithmetic number, because the mean of its divisors is an integer number (30447900).

Almost surely, 2^648134860 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 648134860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730749600).

648134860 is an abundant number, since it is smaller than the sum of its proper divisors (813364340).

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

648134860 is a wasteful number, since it uses less digits than its factorization.

648134860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26946 (or 26944 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 648134860 is about 25458.4928854793. The cubic root of 648134860 is about 865.4097694331.

The spelling of 648134860 in words is "six hundred forty-eight million, one hundred thirty-four thousand, eight hundred sixty".