68280101 has 2 divisors, whose sum is σ = 68280102. Its totient is φ = 68280100.

The previous prime is 68280097. The next prime is 68280103. The reversal of 68280101 is 10108286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63760225 + 4519876 = 7985^2 + 2126^2 .

It is a cyclic number.

It is not a de Polignac number, because 68280101 - 2² = 68280097 is a prime.

Together with 68280103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68280103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34140050 + 34140051.

It is an arithmetic number, because the mean of its divisors is an integer number (34140051).

Almost surely, 2^68280101 is an apocalyptic number.

It is an amenable number.

68280101 is a deficient number, since it is larger than the sum of its proper divisors (1).

68280101 is an equidigital number, since it uses as much as digits as its factorization.

68280101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 68280101 is about 8263.1774154982. The cubic root of 68280101 is about 408.7251717065.

Adding to 68280101 its reverse (10108286), we get a palindrome (78388387).

The spelling of 68280101 in words is "sixty-eight million, two hundred eighty thousand, one hundred one".