68361901 has 2 divisors, whose sum is σ = 68361902. Its totient is φ = 68361900.

The previous prime is 68361899. The next prime is 68361929. The reversal of 68361901 is 10916386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53144100 + 15217801 = 7290^2 + 3901^2 .

It is a cyclic number.

It is not a de Polignac number, because 68361901 - 2¹ = 68361899 is a prime.

Together with 68361899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68361971) 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, 34180950 + 34180951.

It is an arithmetic number, because the mean of its divisors is an integer number (34180951).

Almost surely, 2^68361901 is an apocalyptic number.

It is an amenable number.

68361901 is a deficient number, since it is larger than the sum of its proper divisors (1).

68361901 is an equidigital number, since it uses as much as digits as its factorization.

68361901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 68361901 is about 8268.1256037871. The cubic root of 68361901 is about 408.8883250322. Note that the first 3 decimals are identical.

The spelling of 68361901 in words is "sixty-eight million, three hundred sixty-one thousand, nine hundred one".