68539183 has 2 divisors, whose sum is σ = 68539184. Its totient is φ = 68539182.

The previous prime is 68539169. The next prime is 68539193. The reversal of 68539183 is 38193586.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68539183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68539153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34269591 + 34269592.

It is an arithmetic number, because the mean of its divisors is an integer number (34269592).

Almost surely, 2^68539183 is an apocalyptic number.

68539183 is a deficient number, since it is larger than the sum of its proper divisors (1).

68539183 is an equidigital number, since it uses as much as digits as its factorization.

68539183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 68539183 is about 8278.8394718100. The cubic root of 68539183 is about 409.2414748028.

The spelling of 68539183 in words is "sixty-eight million, five hundred thirty-nine thousand, one hundred eighty-three".