68001239 has 4 divisors (see below), whose sum is σ = 68040600. Its totient is φ = 67961880.

The previous prime is 68001233. The next prime is 68001277. The reversal of 68001239 is 93210086.

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

It is a cyclic number.

It is not a de Polignac number, because 68001239 - 2⁴ = 68001223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68001233) 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, 16964 + ... + 20585.

It is an arithmetic number, because the mean of its divisors is an integer number (17010150).

Almost surely, 2^68001239 is an apocalyptic number.

68001239 is a deficient number, since it is larger than the sum of its proper divisors (39361).

68001239 is a wasteful number, since it uses less digits than its factorization.

68001239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39360.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 68001239 is about 8246.2863763030. The cubic root of 68001239 is about 408.1679891819.

The spelling of 68001239 in words is "sixty-eight million, one thousand, two hundred thirty-nine".