71668711 has 2 divisors, whose sum is σ = 71668712. Its totient is φ = 71668710.

The previous prime is 71668643. The next prime is 71668733. The reversal of 71668711 is 11786617.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71668711 - 2¹¹ = 71666663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71668771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35834355 + 35834356.

It is an arithmetic number, because the mean of its divisors is an integer number (35834356).

Almost surely, 2^71668711 is an apocalyptic number.

71668711 is a deficient number, since it is larger than the sum of its proper divisors (1).

71668711 is an equidigital number, since it uses as much as digits as its factorization.

71668711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 37.

The square root of 71668711 is about 8465.7374752587. The cubic root of 71668711 is about 415.3777196870.

The spelling of 71668711 in words is "seventy-one million, six hundred sixty-eight thousand, seven hundred eleven".