68066231 has 4 divisors (see below), whose sum is σ = 68702472. Its totient is φ = 67429992.

The previous prime is 68066197. The next prime is 68066233. The reversal of 68066231 is 13266086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68066231 is a prime.

It is a super-3 number, since 3×68066231³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68066233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317960 + ... + 318173.

It is an arithmetic number, because the mean of its divisors is an integer number (17175618).

Almost surely, 2^68066231 is an apocalyptic number.

68066231 is a deficient number, since it is larger than the sum of its proper divisors (636241).

68066231 is a wasteful number, since it uses less digits than its factorization.

68066231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636240.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 68066231 is about 8250.2261181134. The cubic root of 68066231 is about 408.2979829270.

The spelling of 68066231 in words is "sixty-eight million, sixty-six thousand, two hundred thirty-one".