648484420 has 12 divisors (see below), whose sum is σ = 1361817324. Its totient is φ = 259393760.

The previous prime is 648484411. The next prime is 648484433. The reversal of 648484420 is 24484846.

It can be written as a sum of positive squares in 2 ways, for example, as 420414016 + 228070404 = 20504^2 + 15102^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16212091 + ... + 16212130.

It is an arithmetic number, because the mean of its divisors is an integer number (113484777).

Almost surely, 2^648484420 is an apocalyptic number.

It is an amenable number.

648484420 is an abundant number, since it is smaller than the sum of its proper divisors (713332904).

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

648484420 is a wasteful number, since it uses less digits than its factorization.

648484420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32424230 (or 32424228 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 40.

The square root of 648484420 is about 25465.3572525500. The cubic root of 648484420 is about 865.5653225898.

The spelling of 648484420 in words is "six hundred forty-eight million, four hundred eighty-four thousand, four hundred twenty".