68516980 has 24 divisors (see below), whose sum is σ = 164441088. Its totient is φ = 23491488.

The previous prime is 68516963. The next prime is 68517011. The reversal of 68516980 is 8961586.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244564 + ... + 244843.

It is an arithmetic number, because the mean of its divisors is an integer number (6851712).

Almost surely, 2^68516980 is an apocalyptic number.

It is an amenable number.

68516980 is an abundant number, since it is smaller than the sum of its proper divisors (95924108).

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

68516980 is a wasteful number, since it uses less digits than its factorization.

68516980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489423 (or 489421 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 68516980 is about 8277.4984143762. The cubic root of 68516980 is about 409.1972793056.

It can be divided in two parts, 68516 and 980, that added together give a palindrome (69496).

The spelling of 68516980 in words is "sixty-eight million, five hundred sixteen thousand, nine hundred eighty".