68865321 has 16 divisors (see below), whose sum is σ = 105282944. Its totient is φ = 39222144.

The previous prime is 68865311. The next prime is 68865323. The reversal of 68865321 is 12356886.

It is a happy number.

It is not a de Polignac number, because 68865321 - 2⁶ = 68865257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68865321.

It is not an unprimeable number, because it can be changed into a prime (68865323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1335 + ... + 11811.

It is an arithmetic number, because the mean of its divisors is an integer number (6580184).

Almost surely, 2^68865321 is an apocalyptic number.

It is an amenable number.

68865321 is a deficient number, since it is larger than the sum of its proper divisors (36417623).

68865321 is a wasteful number, since it uses less digits than its factorization.

68865321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10800.

The product of its digits is 69120, while the sum is 39.

The square root of 68865321 is about 8298.5131800823. The cubic root of 68865321 is about 409.8895617678.

The spelling of 68865321 in words is "sixty-eight million, eight hundred sixty-five thousand, three hundred twenty-one".