68645443 has 2 divisors, whose sum is σ = 68645444. Its totient is φ = 68645442.

The previous prime is 68645431. The next prime is 68645449. The reversal of 68645443 is 34454686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68645443 - 2⁵ = 68645411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68645396 and 68645405.

It is not a weakly prime, because it can be changed into another prime (68645449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34322721 + 34322722.

It is an arithmetic number, because the mean of its divisors is an integer number (34322722).

Almost surely, 2^68645443 is an apocalyptic number.

68645443 is a deficient number, since it is larger than the sum of its proper divisors (1).

68645443 is an equidigital number, since it uses as much as digits as its factorization.

68645443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 40.

The square root of 68645443 is about 8285.2545525168. The cubic root of 68645443 is about 409.4528553282.

The spelling of 68645443 in words is "sixty-eight million, six hundred forty-five thousand, four hundred forty-three".