68688061 has 8 divisors (see below), whose sum is σ = 74864160. Its totient is φ = 62639472.

The previous prime is 68688049. The next prime is 68688107. The reversal of 68688061 is 16088686.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68688061 - 2⁵ = 68688029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68687999 and 68688017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68688031) 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, 30751 + ... + 32908.

It is an arithmetic number, because the mean of its divisors is an integer number (9358020).

Almost surely, 2^68688061 is an apocalyptic number.

It is an amenable number.

68688061 is a deficient number, since it is larger than the sum of its proper divisors (6176099).

68688061 is a wasteful number, since it uses less digits than its factorization.

68688061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63755.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 68688061 is about 8287.8260720167. The cubic root of 68688061 is about 409.5375730265.

The spelling of 68688061 in words is "sixty-eight million, six hundred eighty-eight thousand, sixty-one".