68781976 has 32 divisors (see below), whose sum is σ = 136710000. Its totient is φ = 32351616.

The previous prime is 68781971. The next prime is 68782013. The reversal of 68781976 is 67918786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68781971) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 21130 + ... + 24166.

Almost surely, 2^68781976 is an apocalyptic number.

It is an amenable number.

68781976 is a deficient number, since it is larger than the sum of its proper divisors (67928024).

68781976 is a wasteful number, since it uses less digits than its factorization.

68781976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211 (or 3207 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 52.

The square root of 68781976 is about 8293.4899770844. The cubic root of 68781976 is about 409.7241372550.

The spelling of 68781976 in words is "sixty-eight million, seven hundred eighty-one thousand, nine hundred seventy-six".