648989794 has 8 divisors (see below), whose sum is σ = 976243500. Its totient is φ = 323575296.

The previous prime is 648989777. The next prime is 648989839. The reversal of 648989794 is 497989846.

648989794 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 641355625 + 7634169 = 25325^2 + 2763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458919 + ... + 460330.

Almost surely, 2^648989794 is an apocalyptic number.

648989794 is a deficient number, since it is larger than the sum of its proper divisors (327253706).

648989794 is a wasteful number, since it uses less digits than its factorization.

648989794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919604.

The product of its digits is 31352832, while the sum is 64.

The square root of 648989794 is about 25475.2780946548. The cubic root of 648989794 is about 865.7901137140.

The spelling of 648989794 in words is "six hundred forty-eight million, nine hundred eighty-nine thousand, seven hundred ninety-four".