71716147 has 2 divisors, whose sum is σ = 71716148. Its totient is φ = 71716146.

The previous prime is 71716133. The next prime is 71716153. The reversal of 71716147 is 74161717.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71716147 - 2⁷ = 71716019 is a prime.

It is not a weakly prime, because it can be changed into another prime (71716747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35858073 + 35858074.

It is an arithmetic number, because the mean of its divisors is an integer number (35858074).

Almost surely, 2^71716147 is an apocalyptic number.

71716147 is a deficient number, since it is larger than the sum of its proper divisors (1).

71716147 is an equidigital number, since it uses as much as digits as its factorization.

71716147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8232, while the sum is 34.

The square root of 71716147 is about 8468.5386578795. The cubic root of 71716147 is about 415.4693427102.

The spelling of 71716147 in words is "seventy-one million, seven hundred sixteen thousand, one hundred forty-seven".