648438576 has 40 divisors (see below), whose sum is σ = 1676065344. Its totient is φ = 216025920.

The previous prime is 648438569. The next prime is 648438587. The reversal of 648438576 is 675834846.

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, 140335 + ... + 144881.

Almost surely, 2^648438576 is an apocalyptic number.

It is an amenable number.

648438576 is an abundant number, since it is smaller than the sum of its proper divisors (1027626768).

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

648438576 is a wasteful number, since it uses less digits than its factorization.

648438576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7529 (or 7523 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 51.

The square root of 648438576 is about 25464.4571118255. The cubic root of 648438576 is about 865.5449253320.

The spelling of 648438576 in words is "six hundred forty-eight million, four hundred thirty-eight thousand, five hundred seventy-six".