71144719 has 2 divisors, whose sum is σ = 71144720. Its totient is φ = 71144718.

The previous prime is 71144713. The next prime is 71144729. The reversal of 71144719 is 91744117.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71144719 - 2⁹ = 71144207 is a prime.

It is a super-2 number, since 2×71144719² = 10123142083177922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71144713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35572359 + 35572360.

It is an arithmetic number, because the mean of its divisors is an integer number (35572360).

Almost surely, 2^71144719 is an apocalyptic number.

71144719 is a deficient number, since it is larger than the sum of its proper divisors (1).

71144719 is an equidigital number, since it uses as much as digits as its factorization.

71144719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 34.

The square root of 71144719 is about 8434.7328944075. The cubic root of 71144719 is about 414.3629243842.

The spelling of 71144719 in words is "seventy-one million, one hundred forty-four thousand, seven hundred nineteen".