68281233 has 8 divisors (see below), whose sum is σ = 91212096. Its totient is φ = 45435600.

The previous prime is 68281229. The next prime is 68281237. The reversal of 68281233 is 33218286.

It is an interprime number because it is at equal distance from previous prime (68281229) and next prime (68281237).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68281233 - 2² = 68281229 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68281194 and 68281203.

It is not an unprimeable number, because it can be changed into a prime (68281237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19413 + ... + 22658.

It is an arithmetic number, because the mean of its divisors is an integer number (11401512).

Almost surely, 2^68281233 is an apocalyptic number.

It is an amenable number.

68281233 is a deficient number, since it is larger than the sum of its proper divisors (22930863).

68281233 is a wasteful number, since it uses less digits than its factorization.

68281233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42615.

The product of its digits is 13824, while the sum is 33.

The square root of 68281233 is about 8263.2459118678. The cubic root of 68281233 is about 408.7274304141.

The spelling of 68281233 in words is "sixty-eight million, two hundred eighty-one thousand, two hundred thirty-three".