68729766 has 16 divisors (see below), whose sum is σ = 157096704. Its totient is φ = 19637064.

The previous prime is 68729753. The next prime is 68729779. The reversal of 68729766 is 66792786.

It is an interprime number because it is at equal distance from previous prime (68729753) and next prime (68729779).

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, 818170 + ... + 818253.

It is an arithmetic number, because the mean of its divisors is an integer number (9818544).

Almost surely, 2^68729766 is an apocalyptic number.

68729766 is an abundant number, since it is smaller than the sum of its proper divisors (88366938).

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

68729766 is a wasteful number, since it uses less digits than its factorization.

68729766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636435.

The product of its digits is 1524096, while the sum is 51.

The square root of 68729766 is about 8290.3417299892. The cubic root of 68729766 is about 409.6204419106.

The spelling of 68729766 in words is "sixty-eight million, seven hundred twenty-nine thousand, seven hundred sixty-six".