68945447 has 2 divisors, whose sum is σ = 68945448. Its totient is φ = 68945446.

The previous prime is 68945423. The next prime is 68945483. The reversal of 68945447 is 74454986.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68945447 - 2¹⁰ = 68944423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68945497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34472723 + 34472724.

It is an arithmetic number, because the mean of its divisors is an integer number (34472724).

Almost surely, 2^68945447 is an apocalyptic number.

68945447 is a deficient number, since it is larger than the sum of its proper divisors (1).

68945447 is an equidigital number, since it uses as much as digits as its factorization.

68945447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 47.

The square root of 68945447 is about 8303.3395088964. The cubic root of 68945447 is about 410.0484713663.

The spelling of 68945447 in words is "sixty-eight million, nine hundred forty-five thousand, four hundred forty-seven".