68933239 has 2 divisors, whose sum is σ = 68933240. Its totient is φ = 68933238.

The previous prime is 68933213. The next prime is 68933251. The reversal of 68933239 is 93233986.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68933239 - 2⁹ = 68932727 is a prime.

It is a super-2 number, since 2×68933239² = 9503582878062242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68933195 and 68933204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68933279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34466619 + 34466620.

It is an arithmetic number, because the mean of its divisors is an integer number (34466620).

Almost surely, 2^68933239 is an apocalyptic number.

68933239 is a deficient number, since it is larger than the sum of its proper divisors (1).

68933239 is an equidigital number, since it uses as much as digits as its factorization.

68933239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 43.

The square root of 68933239 is about 8302.6043504433. The cubic root of 68933239 is about 410.0242678477.

The spelling of 68933239 in words is "sixty-eight million, nine hundred thirty-three thousand, two hundred thirty-nine".