648803668 has 12 divisors (see below), whose sum is σ = 1136023840. Its totient is φ = 324225432.

The previous prime is 648803593. The next prime is 648803677. The reversal of 648803668 is 866308846.

It is a super-2 number, since 2×648803668² = 841892399220508448, which contains 22 as substring.

It is a hoax number, since the sum of its digits (49) 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35646 + ... + 50677.

Almost surely, 2^648803668 is an apocalyptic number.

It is an amenable number.

648803668 is a deficient number, since it is larger than the sum of its proper divisors (487220172).

648803668 is a wasteful number, since it uses less digits than its factorization.

648803668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88206 (or 88204 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 49.

The square root of 648803668 is about 25471.6247616833. The cubic root of 648803668 is about 865.7073381656.

The spelling of 648803668 in words is "six hundred forty-eight million, eight hundred three thousand, six hundred sixty-eight".