673816068 has 18 divisors (see below), whose sum is σ = 1703257374. Its totient is φ = 224605344.

The previous prime is 673816001. The next prime is 673816159. The reversal of 673816068 is 860618376.

673816068 is a `hidden beast` number, since 6 + 7 + 38 + 1 + 606 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 607523904 + 66292164 = 24648^2 + 8142^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 in 5 ways as a sum of consecutive naturals, for example, 9358521 + ... + 9358592.

Almost surely, 2^673816068 is an apocalyptic number.

It is an amenable number.

673816068 is an abundant number, since it is smaller than the sum of its proper divisors (1029441306).

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

673816068 is a wasteful number, since it uses less digits than its factorization.

673816068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18717123 (or 18717118 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 673816068 is about 25957.9673318232. The cubic root of 673816068 is about 876.6921564070.

The spelling of 673816068 in words is "six hundred seventy-three million, eight hundred sixteen thousand, sixty-eight".