68666711 has 2 divisors, whose sum is σ = 68666712. Its totient is φ = 68666710.

The previous prime is 68666699. The next prime is 68666749. The reversal of 68666711 is 11766686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68666711 - 2²² = 64472407 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68663711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34333355 + 34333356.

It is an arithmetic number, because the mean of its divisors is an integer number (34333356).

Almost surely, 2^68666711 is an apocalyptic number.

68666711 is a deficient number, since it is larger than the sum of its proper divisors (1).

68666711 is an equidigital number, since it uses as much as digits as its factorization.

68666711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 68666711 is about 8286.5379381259. The cubic root of 68666711 is about 409.4951370577.

The spelling of 68666711 in words is "sixty-eight million, six hundred sixty-six thousand, seven hundred eleven".