71712163 has 2 divisors, whose sum is σ = 71712164. Its totient is φ = 71712162.

The previous prime is 71712139. The next prime is 71712169. The reversal of 71712163 is 36121717.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71712163 - 2²¹ = 69615011 is a prime.

It is not a weakly prime, because it can be changed into another prime (71712169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35856081 + 35856082.

It is an arithmetic number, because the mean of its divisors is an integer number (35856082).

Almost surely, 2^71712163 is an apocalyptic number.

71712163 is a deficient number, since it is larger than the sum of its proper divisors (1).

71712163 is an equidigital number, since it uses as much as digits as its factorization.

71712163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 28.

The square root of 71712163 is about 8468.3034310303. The cubic root of 71712163 is about 415.4616491359.

It can be divided in two parts, 717 and 12163, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 71712163 in words is "seventy-one million, seven hundred twelve thousand, one hundred sixty-three".