71347287 has 12 divisors (see below), whose sum is σ = 104564600. Its totient is φ = 43240560.

The previous prime is 71347259. The next prime is 71347313. The reversal of 71347287 is 78274317.

It is not a de Polignac number, because 71347287 - 2¹⁵ = 71314519 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71347217) 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 11 ways as a sum of consecutive naturals, for example, 97912 + ... + 98637.

Almost surely, 2^71347287 is an apocalyptic number.

71347287 is a deficient number, since it is larger than the sum of its proper divisors (33217313).

71347287 is a wasteful number, since it uses less digits than its factorization.

71347287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196574 (or 196563 counting only the distinct ones).

The product of its digits is 65856, while the sum is 39.

The square root of 71347287 is about 8446.7323267640. The cubic root of 71347287 is about 414.7558190008.

The spelling of 71347287 in words is "seventy-one million, three hundred forty-seven thousand, two hundred eighty-seven".