648530916 has 24 divisors (see below), whose sum is σ = 1650806304. Its totient is φ = 196524480.

The previous prime is 648530899. The next prime is 648530917. The reversal of 648530916 is 619035846.

It is not an unprimeable number, because it can be changed into a prime (648530917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2456425 + ... + 2456688.

It is an arithmetic number, because the mean of its divisors is an integer number (68783596).

Almost surely, 2^648530916 is an apocalyptic number.

648530916 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

648530916 is an abundant number, since it is smaller than the sum of its proper divisors (1002275388).

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

648530916 is a wasteful number, since it uses less digits than its factorization.

648530916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4913131 (or 4913129 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 648530916 is about 25466.2701627074. The cubic root of 648530916 is about 865.5860089585.

It can be divided in two parts, 6485 and 30916, that added together give a triangular number (37401 = T₂₇₃).

The spelling of 648530916 in words is "six hundred forty-eight million, five hundred thirty thousand, nine hundred sixteen".