68466439 has 2 divisors, whose sum is σ = 68466440. Its totient is φ = 68466438.

The previous prime is 68466427. The next prime is 68466457. The reversal of 68466439 is 93466486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68466439 - 2⁷ = 68466311 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68466499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34233219 + 34233220.

It is an arithmetic number, because the mean of its divisors is an integer number (34233220).

Almost surely, 2^68466439 is an apocalyptic number.

68466439 is a deficient number, since it is larger than the sum of its proper divisors (1).

68466439 is an equidigital number, since it uses as much as digits as its factorization.

68466439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 46.

The square root of 68466439 is about 8274.4449360667. Note that the first 3 decimals coincide. The cubic root of 68466439 is about 409.0966408610.

The spelling of 68466439 in words is "sixty-eight million, four hundred sixty-six thousand, four hundred thirty-nine".