71386047 has 12 divisors (see below), whose sum is σ = 104861640. Its totient is φ = 46783728.

The previous prime is 71386039. The next prime is 71386057. The reversal of 71386047 is 74068317.

It is not a de Polignac number, because 71386047 - 2³ = 71386039 is a prime.

It is a super-3 number, since 3×71386047³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71386057) 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, 66688 + ... + 67749.

It is an arithmetic number, because the mean of its divisors is an integer number (8738470).

Almost surely, 2^71386047 is an apocalyptic number.

71386047 is a deficient number, since it is larger than the sum of its proper divisors (33475593).

71386047 is a wasteful number, since it uses less digits than its factorization.

71386047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134502 (or 134499 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 71386047 is about 8449.0263936148. The cubic root of 71386047 is about 414.8309119065.

The spelling of 71386047 in words is "seventy-one million, three hundred eighty-six thousand, forty-seven".