648300666 has 16 divisors (see below), whose sum is σ = 1396340064. Its totient is φ = 199477104.

The previous prime is 648300649. The next prime is 648300677. The reversal of 648300666 is 666003846.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4155696 + ... + 4155851.

It is an arithmetic number, because the mean of its divisors is an integer number (87271254).

Almost surely, 2^648300666 is an apocalyptic number.

648300666 is an abundant number, since it is smaller than the sum of its proper divisors (748039398).

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

648300666 is a wasteful number, since it uses less digits than its factorization.

648300666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8311565.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 648300666 is about 25461.7490758196. The cubic root of 648300666 is about 865.4835595792.

The spelling of 648300666 in words is "six hundred forty-eight million, three hundred thousand, six hundred sixty-six".