648434796 has 24 divisors (see below), whose sum is σ = 1513559040. Its totient is φ = 216067152.

The previous prime is 648434779. The next prime is 648434821. The reversal of 648434796 is 697434846.

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, 32265 + ... + 48351.

It is an arithmetic number, because the mean of its divisors is an integer number (63064960).

Almost surely, 2^648434796 is an apocalyptic number.

It is an amenable number.

648434796 is an abundant number, since it is smaller than the sum of its proper divisors (865124244).

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

648434796 is a wasteful number, since it uses less digits than its factorization.

648434796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19453 (or 19451 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 51.

The square root of 648434796 is about 25464.3828906180. The cubic root of 648434796 is about 865.5432434630.

Subtracting 648434796 from its reverse (697434846), we obtain a triangular number (49000050 = T₉₈₉₉).

It can be divided in two parts, 648434 and 796, that added together give a triangular number (649230 = T₁₁₃₉).

The spelling of 648434796 in words is "six hundred forty-eight million, four hundred thirty-four thousand, seven hundred ninety-six".