648786424 has 32 divisors (see below), whose sum is σ = 1429147440. Its totient is φ = 272217600.

The previous prime is 648786401. The next prime is 648786443. The reversal of 648786424 is 424687846.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 282417 + ... + 284704.

Almost surely, 2^648786424 is an apocalyptic number.

It is an amenable number.

648786424 is an abundant number, since it is smaller than the sum of its proper divisors (780361016).

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

648786424 is a wasteful number, since it uses less digits than its factorization.

648786424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567151 (or 567147 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 49.

The square root of 648786424 is about 25471.2862651261. The cubic root of 648786424 is about 865.6996684650.

The spelling of 648786424 in words is "six hundred forty-eight million, seven hundred eighty-six thousand, four hundred twenty-four".