68975251 has 2 divisors, whose sum is σ = 68975252. Its totient is φ = 68975250.

The previous prime is 68975237. The next prime is 68975297. The reversal of 68975251 is 15257986.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68975251 - 2⁵ = 68975219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68975198 and 68975207.

It is not a weakly prime, because it can be changed into another prime (68972251) 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, 34487625 + 34487626.

It is an arithmetic number, because the mean of its divisors is an integer number (34487626).

Almost surely, 2^68975251 is an apocalyptic number.

68975251 is a deficient number, since it is larger than the sum of its proper divisors (1).

68975251 is an equidigital number, since it uses as much as digits as its factorization.

68975251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 43.

The square root of 68975251 is about 8305.1340145720. The cubic root of 68975251 is about 410.1075486252.

The spelling of 68975251 in words is "sixty-eight million, nine hundred seventy-five thousand, two hundred fifty-one".