67685306896 has 45 divisors (see below), whose sum is σ = 132215613831. Its totient is φ = 33567399936.

The previous prime is 67685306881. The next prime is 67685306947. The reversal of 67685306896 is 69860358676.

The square root of 67685306896 is 260164.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 16138145296 + 51547161600 = 127036^2 + 227040^2 .

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 200846440 + ... + 200846776.

Almost surely, 2^67685306896 is an apocalyptic number.

67685306896 is the 260164-th square number.

It is an amenable number.

67685306896 is a deficient number, since it is larger than the sum of its proper divisors (64530306935).

67685306896 is an frugal number, since it uses more digits than its factorization.

67685306896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 64.

Multiplying 67685306896 by its sum of digits (64), we get a square (4331859641344 = 2081312²).

The spelling of 67685306896 in words is "sixty-seven billion, six hundred eighty-five million, three hundred six thousand, eight hundred ninety-six".