68789543 has 2 divisors, whose sum is σ = 68789544. Its totient is φ = 68789542.

The previous prime is 68789509. The next prime is 68789561. The reversal of 68789543 is 34598786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68789543 - 2¹² = 68785447 is a prime.

It is a super-2 number, since 2×68789543² = 9464002452297698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68789491 and 68789500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68789563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34394771 + 34394772.

It is an arithmetic number, because the mean of its divisors is an integer number (34394772).

Almost surely, 2^68789543 is an apocalyptic number.

68789543 is a deficient number, since it is larger than the sum of its proper divisors (1).

68789543 is an equidigital number, since it uses as much as digits as its factorization.

68789543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 50.

The square root of 68789543 is about 8293.9461657284. The cubic root of 68789543 is about 409.7391618735.

The spelling of 68789543 in words is "sixty-eight million, seven hundred eighty-nine thousand, five hundred forty-three".