68649443 has 2 divisors, whose sum is σ = 68649444. Its totient is φ = 68649442.

The previous prime is 68649437. The next prime is 68649463. The reversal of 68649443 is 34494686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68649443 - 2¹⁸ = 68387299 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68649394 and 68649403.

It is not a weakly prime, because it can be changed into another prime (68649463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34324721 + 34324722.

It is an arithmetic number, because the mean of its divisors is an integer number (34324722).

Almost surely, 2^68649443 is an apocalyptic number.

68649443 is a deficient number, since it is larger than the sum of its proper divisors (1).

68649443 is an equidigital number, since it uses as much as digits as its factorization.

68649443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 44.

The square root of 68649443 is about 8285.4959417044. The cubic root of 68649443 is about 409.4608081728.

The spelling of 68649443 in words is "sixty-eight million, six hundred forty-nine thousand, four hundred forty-three".