71146805 has 4 divisors (see below), whose sum is σ = 85376172. Its totient is φ = 56917440.

The previous prime is 71146793. The next prime is 71146813. The reversal of 71146805 is 50864117.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50864117 = 227 ⋅224071.

It can be written as a sum of positive squares in 2 ways, for example, as 39853969 + 31292836 = 6313^2 + 5594^2 .

It is not a de Polignac number, because 71146805 - 2¹⁸ = 70884661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7114676 + ... + 7114685.

It is an arithmetic number, because the mean of its divisors is an integer number (21344043).

Almost surely, 2^71146805 is an apocalyptic number.

It is an amenable number.

71146805 is a deficient number, since it is larger than the sum of its proper divisors (14229367).

71146805 is a wasteful number, since it uses less digits than its factorization.

71146805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14229366.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 71146805 is about 8434.8565488691. The cubic root of 71146805 is about 414.3669741231.

The spelling of 71146805 in words is "seventy-one million, one hundred forty-six thousand, eight hundred five".