68766643 has 8 divisors (see below), whose sum is σ = 78966720. Its totient is φ = 59224680.

The previous prime is 68766641. The next prime is 68766647. The reversal of 68766643 is 34666786.

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 68766643 - 2¹ = 68766641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68766593 and 68766602.

It is not an unprimeable number, because it can be changed into a prime (68766641) by changing a digit.

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, 164305 + ... + 164722.

It is an arithmetic number, because the mean of its divisors is an integer number (9870840).

Almost surely, 2^68766643 is an apocalyptic number.

68766643 is a deficient number, since it is larger than the sum of its proper divisors (10200077).

68766643 is a wasteful number, since it uses less digits than its factorization.

68766643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329057.

The product of its digits is 870912, while the sum is 46.

The square root of 68766643 is about 8292.5655258189. The cubic root of 68766643 is about 409.6936895154.

The spelling of 68766643 in words is "sixty-eight million, seven hundred sixty-six thousand, six hundred forty-three".