68734821 has 8 divisors (see below), whose sum is σ = 93596544. Its totient is φ = 44848160.

The previous prime is 68734753. The next prime is 68734867. The reversal of 68734821 is 12843786.

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 68734821 - 2¹¹ = 68732773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68734821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68734891) 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, 243600 + ... + 243881.

It is an arithmetic number, because the mean of its divisors is an integer number (11699568).

Almost surely, 2^68734821 is an apocalyptic number.

It is an amenable number.

68734821 is a deficient number, since it is larger than the sum of its proper divisors (24861723).

68734821 is a wasteful number, since it uses less digits than its factorization.

68734821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487531.

The product of its digits is 64512, while the sum is 39.

The square root of 68734821 is about 8290.6465972203. The cubic root of 68734821 is about 409.6304840447.

The spelling of 68734821 in words is "sixty-eight million, seven hundred thirty-four thousand, eight hundred twenty-one".