71005206 has 8 divisors (see below), whose sum is σ = 142010424. Its totient is φ = 23668400.

The previous prime is 71005201. The next prime is 71005219. The reversal of 71005206 is 60250017.

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

71005206 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71005201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5917095 + ... + 5917106.

It is an arithmetic number, because the mean of its divisors is an integer number (17751303).

Almost surely, 2^71005206 is an apocalyptic number.

71005206 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71005206 is a wasteful number, since it uses less digits than its factorization.

71005206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11834206.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 71005206 is about 8426.4586867794. The cubic root of 71005206 is about 414.0918953978.

The spelling of 71005206 in words is "seventy-one million, five thousand, two hundred six".