68038589 has 4 divisors (see below), whose sum is σ = 68196156. Its totient is φ = 67881024.

The previous prime is 68038571. The next prime is 68038667. The reversal of 68038589 is 98583086.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6416089 + 61622500 = 2533^2 + 7850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68038589 is a prime.

It is a super-2 number, since 2×68038589² = 9258499186221842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68038189) 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, 78134 + ... + 78999.

It is an arithmetic number, because the mean of its divisors is an integer number (17049039).

Almost surely, 2^68038589 is an apocalyptic number.

It is an amenable number.

68038589 is a deficient number, since it is larger than the sum of its proper divisors (157567).

68038589 is a wasteful number, since it uses less digits than its factorization.

68038589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157566.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 68038589 is about 8248.5507211873. The cubic root of 68038589 is about 408.2427048995.

The spelling of 68038589 in words is "sixty-eight million, thirty-eight thousand, five hundred eighty-nine".