68712971 has 2 divisors, whose sum is σ = 68712972. Its totient is φ = 68712970.

The previous prime is 68712953. The next prime is 68713039. The reversal of 68712971 is 17921786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68712971 - 2⁶ = 68712907 is a prime.

It is not a weakly prime, because it can be changed into another prime (68712871) 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, 34356485 + 34356486.

It is an arithmetic number, because the mean of its divisors is an integer number (34356486).

Almost surely, 2^68712971 is an apocalyptic number.

68712971 is a deficient number, since it is larger than the sum of its proper divisors (1).

68712971 is an equidigital number, since it uses as much as digits as its factorization.

68712971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 41.

The square root of 68712971 is about 8289.3287424254. The cubic root of 68712971 is about 409.5870738560.

The spelling of 68712971 in words is "sixty-eight million, seven hundred twelve thousand, nine hundred seventy-one".