71270071 has 4 divisors (see below), whose sum is σ = 72004912. Its totient is φ = 70535232.

The previous prime is 71270063. The next prime is 71270113. The reversal of 71270071 is 17007217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17007217 = 509 ⋅33413.

It is a cyclic number.

It is not a de Polignac number, because 71270071 - 2³ = 71270063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71270011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367275 + ... + 367468.

It is an arithmetic number, because the mean of its divisors is an integer number (18001228).

Almost surely, 2^71270071 is an apocalyptic number.

71270071 is a deficient number, since it is larger than the sum of its proper divisors (734841).

71270071 is an equidigital number, since it uses as much as digits as its factorization.

71270071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734840.

The product of its (nonzero) digits is 686, while the sum is 25.

The square root of 71270071 is about 8442.1603277834. The cubic root of 71270071 is about 414.6061410570.

Adding to 71270071 its reverse (17007217), we get a palindrome (88277288).

The spelling of 71270071 in words is "seventy-one million, two hundred seventy thousand, seventy-one".