68402843 has 2 divisors, whose sum is σ = 68402844. Its totient is φ = 68402842.

The previous prime is 68402837. The next prime is 68402857. The reversal of 68402843 is 34820486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68402843 - 2¹² = 68398747 is a prime.

It is not a weakly prime, because it can be changed into another prime (68402443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34201421 + 34201422.

It is an arithmetic number, because the mean of its divisors is an integer number (34201422).

Almost surely, 2^68402843 is an apocalyptic number.

68402843 is a deficient number, since it is larger than the sum of its proper divisors (1).

68402843 is an equidigital number, since it uses as much as digits as its factorization.

68402843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 68402843 is about 8270.6011268831. The cubic root of 68402843 is about 408.9699365958.

The spelling of 68402843 in words is "sixty-eight million, four hundred two thousand, eight hundred forty-three".