68400001 has 2 divisors, whose sum is σ = 68400002. Its totient is φ = 68400000.

The previous prime is 68399983. The next prime is 68400023. The reversal of 68400001 is 10000486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36590401 + 31809600 = 6049^2 + 5640^2 .

It is a cyclic number.

It is not a de Polignac number, because 68400001 - 2⁷ = 68399873 is a prime.

It is not a weakly prime, because it can be changed into another prime (68400301) 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, 34200000 + 34200001.

It is an arithmetic number, because the mean of its divisors is an integer number (34200001).

Almost surely, 2^68400001 is an apocalyptic number.

It is an amenable number.

68400001 is a deficient number, since it is larger than the sum of its proper divisors (1).

68400001 is an equidigital number, since it uses as much as digits as its factorization.

68400001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 68400001 is about 8270.4293117105. The cubic root of 68400001 is about 408.9642725590.

Adding to 68400001 its reverse (10000486), we get a palindrome (78400487).

The spelling of 68400001 in words is "sixty-eight million, four hundred thousand, one".