648630452 has 24 divisors (see below), whose sum is σ = 1186527552. Its totient is φ = 309672000.

The previous prime is 648630431. The next prime is 648630467. The reversal of 648630452 is 254036846.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 49427 + ... + 61157.

It is an arithmetic number, because the mean of its divisors is an integer number (49438648).

Almost surely, 2^648630452 is an apocalyptic number.

It is an amenable number.

648630452 is a deficient number, since it is larger than the sum of its proper divisors (537897100).

648630452 is a wasteful number, since it uses less digits than its factorization.

648630452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12359 (or 12357 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 648630452 is about 25468.2243589929. The cubic root of 648630452 is about 865.6302898398.

The spelling of 648630452 in words is "six hundred forty-eight million, six hundred thirty thousand, four hundred fifty-two".