68405801 has 2 divisors, whose sum is σ = 68405802. Its totient is φ = 68405800.

The previous prime is 68405791. The next prime is 68405851. The reversal of 68405801 is 10850486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64000000 + 4405801 = 8000^2 + 2099^2 .

It is a cyclic number.

It is not a de Polignac number, because 68405801 - 2¹⁸ = 68143657 is a prime.

It is a super-2 number, since 2×68405801² = 9358707220903202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68405851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34202900 + 34202901.

It is an arithmetic number, because the mean of its divisors is an integer number (34202901).

Almost surely, 2^68405801 is an apocalyptic number.

It is an amenable number.

68405801 is a deficient number, since it is larger than the sum of its proper divisors (1).

68405801 is an equidigital number, since it uses as much as digits as its factorization.

68405801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 68405801 is about 8270.7799511292. The cubic root of 68405801 is about 408.9758316512.

The spelling of 68405801 in words is "sixty-eight million, four hundred five thousand, eight hundred one".