648505456 has 40 divisors (see below), whose sum is σ = 1288605024. Its totient is φ = 316043520.

The previous prime is 648505427. The next prime is 648505463. The reversal of 648505456 is 654505846.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130701 + ... + 135571.

Almost surely, 2^648505456 is an apocalyptic number.

It is an amenable number.

648505456 is a deficient number, since it is larger than the sum of its proper divisors (640099568).

648505456 is a wasteful number, since it uses less digits than its factorization.

648505456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5089 (or 5083 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 43.

The square root of 648505456 is about 25465.7702809084. The cubic root of 648505456 is about 865.5746817636.

The spelling of 648505456 in words is "six hundred forty-eight million, five hundred five thousand, four hundred fifty-six".