68128441 has 2 divisors, whose sum is σ = 68128442. Its totient is φ = 68128440.

The previous prime is 68128409. The next prime is 68128457. The reversal of 68128441 is 14482186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64963600 + 3164841 = 8060^2 + 1779^2 .

It is a cyclic number.

It is not a de Polignac number, because 68128441 - 2⁵ = 68128409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68128397 and 68128406.

It is not a weakly prime, because it can be changed into another prime (68126441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34064220 + 34064221.

It is an arithmetic number, because the mean of its divisors is an integer number (34064221).

Almost surely, 2^68128441 is an apocalyptic number.

It is an amenable number.

68128441 is a deficient number, since it is larger than the sum of its proper divisors (1).

68128441 is an equidigital number, since it uses as much as digits as its factorization.

68128441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 34.

The square root of 68128441 is about 8253.9954567470. The cubic root of 68128441 is about 408.4223347668.

The spelling of 68128441 in words is "sixty-eight million, one hundred twenty-eight thousand, four hundred forty-one".