68905472068624 has 45 divisors (see below), whose sum is σ = 137951927197119. Its totient is φ = 33340859396640.

The previous prime is 68905472068621. The next prime is 68905472068673. The reversal of 68905472068624 is 42686027450986.

The square root of 68905472068624 is 8300932.

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

68905472068624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 68905472068624.

It is not an unprimeable number, because it can be changed into a prime (68905472068621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1029282097 + ... + 1029349039.

Almost surely, 2^{68905472068624} is an apocalyptic number.

68905472068624 is the 8300932-nd square number.

It is an amenable number.

68905472068624 is an abundant number, since it is smaller than the sum of its proper divisors (69046455128495).

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

68905472068624 is an frugal number, since it uses more digits than its factorization.

68905472068624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133956 (or 66976 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 67.

The spelling of 68905472068624 in words is "sixty-eight trillion, nine hundred five billion, four hundred seventy-two million, sixty-eight thousand, six hundred twenty-four".