71905113 has 12 divisors (see below), whose sum is σ = 118700608. Its totient is φ = 41088600.

The previous prime is 71905111. The next prime is 71905133. The reversal of 71905113 is 31150917.

It is a happy number.

It is not a de Polignac number, because 71905113 - 2¹ = 71905111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71905111) 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 11 ways as a sum of consecutive naturals, for example, 570613 + ... + 570738.

Almost surely, 2^71905113 is an apocalyptic number.

It is an amenable number.

71905113 is a deficient number, since it is larger than the sum of its proper divisors (46795495).

71905113 is a wasteful number, since it uses less digits than its factorization.

71905113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141364 (or 1141361 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 71905113 is about 8479.6882607794. The cubic root of 71905113 is about 415.8339315719.

The spelling of 71905113 in words is "seventy-one million, nine hundred five thousand, one hundred thirteen".