211068648 has 48 divisors (see below), whose sum is σ = 653309280. Its totient is φ = 60305184.

The previous prime is 211068647. The next prime is 211068653. The reversal of 211068648 is 846860112.

211068648 is a `hidden beast` number, since 2 + 1 + 1 + 0 + 6 + 8 + 648 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (211068643) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 208890 + ... + 209897.

It is an arithmetic number, because the mean of its divisors is an integer number (13610610).

Almost surely, 2^211068648 is an apocalyptic number.

211068648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

211068648 is an abundant number, since it is smaller than the sum of its proper divisors (442240632).

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

211068648 is a wasteful number, since it uses less digits than its factorization.

211068648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418806 (or 418799 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 211068648 is about 14528.2018157789. The cubic root of 211068648 is about 595.3987375059.

The spelling of 211068648 in words is "two hundred eleven million, sixty-eight thousand, six hundred forty-eight".