71471911 has 8 divisors (see below), whose sum is σ = 81772544. Its totient is φ = 61193880.

The previous prime is 71471909. The next prime is 71471923. The reversal of 71471911 is 11917417.

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

It is a cyclic number.

It is not a de Polignac number, because 71471911 - 2¹ = 71471909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71472911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1786 + ... + 12088.

It is an arithmetic number, because the mean of its divisors is an integer number (10221568).

Almost surely, 2^71471911 is an apocalyptic number.

71471911 is a deficient number, since it is larger than the sum of its proper divisors (10300633).

71471911 is a wasteful number, since it uses less digits than its factorization.

71471911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11301.

The product of its digits is 1764, while the sum is 31.

The square root of 71471911 is about 8454.1061620966. The cubic root of 71471911 is about 414.9971664780.

The spelling of 71471911 in words is "seventy-one million, four hundred seventy-one thousand, nine hundred eleven".