68775541 has 2 divisors, whose sum is σ = 68775542. Its totient is φ = 68775540.

The previous prime is 68775527. The next prime is 68775607. The reversal of 68775541 is 14557786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53728900 + 15046641 = 7330^2 + 3879^2 .

It is a cyclic number.

It is not a de Polignac number, because 68775541 - 2⁹ = 68775029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68775841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34387770 + 34387771.

It is an arithmetic number, because the mean of its divisors is an integer number (34387771).

Almost surely, 2^68775541 is an apocalyptic number.

It is an amenable number.

68775541 is a deficient number, since it is larger than the sum of its proper divisors (1).

68775541 is an equidigital number, since it uses as much as digits as its factorization.

68775541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235200, while the sum is 43.

The square root of 68775541 is about 8293.1020131191. The cubic root of 68775541 is about 409.7113594063.

The spelling of 68775541 in words is "sixty-eight million, seven hundred seventy-five thousand, five hundred forty-one".