648419798 has 16 divisors (see below), whose sum is σ = 1057822416. Its totient is φ = 296306400.

The previous prime is 648419789. The next prime is 648419801. The reversal of 648419798 is 897914846.

648419798 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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, 120836 + ... + 126087.

It is an arithmetic number, because the mean of its divisors is an integer number (66113901).

Almost surely, 2^648419798 is an apocalyptic number.

648419798 is a deficient number, since it is larger than the sum of its proper divisors (409402618).

648419798 is a wasteful number, since it uses less digits than its factorization.

648419798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247039.

The product of its digits is 3483648, while the sum is 56.

The square root of 648419798 is about 25464.0883991554. The cubic root of 648419798 is about 865.5365702052.

The spelling of 648419798 in words is "six hundred forty-eight million, four hundred nineteen thousand, seven hundred ninety-eight".