648845530 has 8 divisors (see below), whose sum is σ = 1167921972. Its totient is φ = 259538208.

The previous prime is 648845521. The next prime is 648845537. The reversal of 648845530 is 35548846.

648845530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 588984361 + 59861169 = 24269^2 + 7737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (648845537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32442267 + ... + 32442286.

Almost surely, 2^648845530 is an apocalyptic number.

648845530 is a deficient number, since it is larger than the sum of its proper divisors (519076442).

648845530 is a wasteful number, since it uses less digits than its factorization.

648845530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64884560.

The product of its (nonzero) digits is 460800, while the sum is 43.

The square root of 648845530 is about 25472.4464863507. The cubic root of 648845530 is about 865.7259567724.

The spelling of 648845530 in words is "six hundred forty-eight million, eight hundred forty-five thousand, five hundred thirty".