68012251 has 2 divisors, whose sum is σ = 68012252. Its totient is φ = 68012250.

The previous prime is 68012237. The next prime is 68012281. The reversal of 68012251 is 15221086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68012251 - 2⁹ = 68011739 is a prime.

It is not a weakly prime, because it can be changed into another prime (68012281) 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, 34006125 + 34006126.

It is an arithmetic number, because the mean of its divisors is an integer number (34006126).

Almost surely, 2^68012251 is an apocalyptic number.

68012251 is a deficient number, since it is larger than the sum of its proper divisors (1).

68012251 is an equidigital number, since it uses as much as digits as its factorization.

68012251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 68012251 is about 8246.9540437667. The cubic root of 68012251 is about 408.1900206594.

The spelling of 68012251 in words is "sixty-eight million, twelve thousand, two hundred fifty-one".