71405017 has 2 divisors, whose sum is σ = 71405018. Its totient is φ = 71405016.

The previous prime is 71405011. The next prime is 71405027. The reversal of 71405017 is 71050417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48594841 + 22810176 = 6971^2 + 4776^2 .

It is a cyclic number.

It is not a de Polignac number, because 71405017 - 2⁷ = 71404889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71404982 and 71405000.

It is not a weakly prime, because it can be changed into another prime (71405011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35702508 + 35702509.

It is an arithmetic number, because the mean of its divisors is an integer number (35702509).

Almost surely, 2^71405017 is an apocalyptic number.

It is an amenable number.

71405017 is a deficient number, since it is larger than the sum of its proper divisors (1).

71405017 is an equidigital number, since it uses as much as digits as its factorization.

71405017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 71405017 is about 8450.1489335987. The cubic root of 71405017 is about 414.8676541261.

The spelling of 71405017 in words is "seventy-one million, four hundred five thousand, seventeen".