71711663 has 2 divisors, whose sum is σ = 71711664. Its totient is φ = 71711662.

The previous prime is 71711621. The next prime is 71711701. The reversal of 71711663 is 36611717.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71711663 - 2²⁶ = 4602799 is a prime.

It is a super-3 number, since 3×71711663³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71711063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35855831 + 35855832.

It is an arithmetic number, because the mean of its divisors is an integer number (35855832).

Almost surely, 2^71711663 is an apocalyptic number.

71711663 is a deficient number, since it is larger than the sum of its proper divisors (1).

71711663 is an equidigital number, since it uses as much as digits as its factorization.

71711663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 32.

The square root of 71711663 is about 8468.2739091269. The cubic root of 71711663 is about 415.4606835568.

The spelling of 71711663 in words is "seventy-one million, seven hundred eleven thousand, six hundred sixty-three".