210068816 has 10 divisors (see below), whose sum is σ = 407008362. Its totient is φ = 105034400.

The previous prime is 210068797. The next prime is 210068827. The reversal of 210068816 is 618860012.

It can be written as a sum of positive squares in only one way, i.e., 185068816 + 25000000 = 13604^2 + 5000^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6564635 + ... + 6564666.

Almost surely, 2^210068816 is an apocalyptic number.

It is an amenable number.

210068816 is a deficient number, since it is larger than the sum of its proper divisors (196939546).

210068816 is a wasteful number, since it uses less digits than its factorization.

210068816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13129309 (or 13129303 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 210068816 is about 14493.7509292798. The cubic root of 210068816 is about 594.4571146829.

The spelling of 210068816 in words is "two hundred ten million, sixty-eight thousand, eight hundred sixteen".