71070019 has 2 divisors, whose sum is σ = 71070020. Its totient is φ = 71070018.

The previous prime is 71070017. The next prime is 71070029. The reversal of 71070019 is 91007017.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71070019 - 2¹ = 71070017 is a prime.

It is a super-2 number, since 2×71070019² = 10101895201320722, which contains 22 as substring.

Together with 71070017, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 71069975 and 71070002.

It is not a weakly prime, because it can be changed into another prime (71070017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35535009 + 35535010.

It is an arithmetic number, because the mean of its divisors is an integer number (35535010).

Almost surely, 2^71070019 is an apocalyptic number.

71070019 is a deficient number, since it is larger than the sum of its proper divisors (1).

71070019 is an equidigital number, since it uses as much as digits as its factorization.

71070019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 441, while the sum is 25.

The square root of 71070019 is about 8430.3036125634. The cubic root of 71070019 is about 414.2178503696.

The spelling of 71070019 in words is "seventy-one million, seventy thousand, nineteen".