71032005 has 64 divisors (see below), whose sum is σ = 142295040. Its totient is φ = 33307200.

The previous prime is 71031959. The next prime is 71032009. The reversal of 71032005 is 50023017.

It is not a de Polignac number, because 71032005 - 2¹⁴ = 71015621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71032009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45264 + ... + 46806.

It is an arithmetic number, because the mean of its divisors is an integer number (2223360).

Almost surely, 2^71032005 is an apocalyptic number.

It is an amenable number.

71032005 is an abundant number, since it is smaller than the sum of its proper divisors (71263035).

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

71032005 is a wasteful number, since it uses less digits than its factorization.

71032005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599 (or 1593 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 71032005 is about 8428.0487065512. The cubic root of 71032005 is about 414.1439847844.

The spelling of 71032005 in words is "seventy-one million, thirty-two thousand, five".