68668733 has 8 divisors (see below), whose sum is σ = 78533952. Its totient is φ = 58817376.

The previous prime is 68668711. The next prime is 68668741. The reversal of 68668733 is 33786686.

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 68668733 - 2¹⁴ = 68652349 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68668753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11441 + ... + 16377.

It is an arithmetic number, because the mean of its divisors is an integer number (9816744).

Almost surely, 2^68668733 is an apocalyptic number.

It is an amenable number.

68668733 is a deficient number, since it is larger than the sum of its proper divisors (9865219).

68668733 is a wasteful number, since it uses less digits than its factorization.

68668733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6931.

The product of its digits is 870912, while the sum is 47.

The square root of 68668733 is about 8286.6599423411. The cubic root of 68668733 is about 409.4991564290.

The spelling of 68668733 in words is "sixty-eight million, six hundred sixty-eight thousand, seven hundred thirty-three".