71000008 has 8 divisors (see below), whose sum is σ = 133125030. Its totient is φ = 35500000.

The previous prime is 70999997. The next prime is 71000051. The reversal of 71000008 is 80000017.

It can be written as a sum of positive squares in only one way, i.e., 63393444 + 7606564 = 7962^2 + 2758^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×71000008³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 70999955 and 71000000.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4437493 + ... + 4437508.

Almost surely, 2^71000008 is an apocalyptic number.

It is an amenable number.

71000008 is a deficient number, since it is larger than the sum of its proper divisors (62125022).

71000008 is a wasteful number, since it uses less digits than its factorization.

71000008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8875007 (or 8875003 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 71000008 is about 8426.1502478890. The cubic root of 71000008 is about 414.0817904947.

Subtracting 71000008 from its reverse (80000017), we obtain a palindrome (9000009).

The spelling of 71000008 in words is "seventy-one million, eight", and thus it is an aban number and an uban number.