68641711 has 2 divisors, whose sum is σ = 68641712. Its totient is φ = 68641710.

The previous prime is 68641691. The next prime is 68641751. The reversal of 68641711 is 11714686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68641711 - 2⁵ = 68641679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68641751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34320855 + 34320856.

It is an arithmetic number, because the mean of its divisors is an integer number (34320856).

Almost surely, 2^68641711 is an apocalyptic number.

68641711 is a deficient number, since it is larger than the sum of its proper divisors (1).

68641711 is an equidigital number, since it uses as much as digits as its factorization.

68641711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 34.

The square root of 68641711 is about 8285.0293300627. The cubic root of 68641711 is about 409.4454350457.

Subtracting from 68641711 its reverse (11714686), we obtain a square (56927025 = 7545²).

The spelling of 68641711 in words is "sixty-eight million, six hundred forty-one thousand, seven hundred eleven".