71000071 has 8 divisors (see below), whose sum is σ = 72720288. Its totient is φ = 69300000.

The previous prime is 71000051. The next prime is 71000081. The reversal of 71000071 is 17000017.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71000071 - 2¹⁷ = 70868999 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 (71000051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2221 + ... + 12121.

It is an arithmetic number, because the mean of its divisors is an integer number (9090036).

Almost surely, 2^71000071 is an apocalyptic number.

71000071 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

71000071 is a deficient number, since it is larger than the sum of its proper divisors (1720217).

71000071 is a wasteful number, since it uses less digits than its factorization.

71000071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10073.

The product of its (nonzero) digits is 49, while the sum is 16.

The square root of 71000071 is about 8426.1539862502. The cubic root of 71000071 is about 414.0819129695.

Adding to 71000071 its reverse (17000017), we get a palindrome (88000088).

It can be divided in two parts, 710000 and 71, that multiplied together give a square (50410000 = 7100²).

The spelling of 71000071 in words is "seventy-one million, seventy-one", and thus it is an aban number and an uban number.