68605239 has 4 divisors (see below), whose sum is σ = 91473656. Its totient is φ = 45736824.

The previous prime is 68605237. The next prime is 68605247. The reversal of 68605239 is 93250686.

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

It is not a de Polignac number, because 68605239 - 2¹ = 68605237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68605197 and 68605206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68605231) 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, 11434204 + ... + 11434209.

It is an arithmetic number, because the mean of its divisors is an integer number (22868414).

Almost surely, 2^68605239 is an apocalyptic number.

68605239 is a deficient number, since it is larger than the sum of its proper divisors (22868417).

68605239 is a wasteful number, since it uses less digits than its factorization.

68605239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22868416.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 68605239 is about 8282.8279590971. The cubic root of 68605239 is about 409.3729041246.

The spelling of 68605239 in words is "sixty-eight million, six hundred five thousand, two hundred thirty-nine".