68243407 has 2 divisors, whose sum is σ = 68243408. Its totient is φ = 68243406.

The previous prime is 68243359. The next prime is 68243419. The reversal of 68243407 is 70434286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68243407 - 2¹¹ = 68241359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68243447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34121703 + 34121704.

It is an arithmetic number, because the mean of its divisors is an integer number (34121704).

Almost surely, 2^68243407 is an apocalyptic number.

68243407 is a deficient number, since it is larger than the sum of its proper divisors (1).

68243407 is an equidigital number, since it uses as much as digits as its factorization.

68243407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 68243407 is about 8260.9567847798. The cubic root of 68243407 is about 408.6519417383.

The spelling of 68243407 in words is "sixty-eight million, two hundred forty-three thousand, four hundred seven".