648327816 has 48 divisors (see below), whose sum is σ = 1757059200. Its totient is φ = 215965152.

The previous prime is 648327809. The next prime is 648327817. The reversal of 648327816 is 618723846.

It is not an unprimeable number, because it can be changed into a prime (648327817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206305 + ... + 209423.

It is an arithmetic number, because the mean of its divisors is an integer number (36605400).

Almost surely, 2^648327816 is an apocalyptic number.

It is an amenable number.

648327816 is an abundant number, since it is smaller than the sum of its proper divisors (1108731384).

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

648327816 is a wasteful number, since it uses less digits than its factorization.

648327816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6018 (or 6011 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 648327816 is about 25462.2822229273. The cubic root of 648327816 is about 865.4956411908.

The spelling of 648327816 in words is "six hundred forty-eight million, three hundred twenty-seven thousand, eight hundred sixteen".