71147061 has 6 divisors (see below), whose sum is σ = 102767990. Its totient is φ = 47431368.

The previous prime is 71147047. The next prime is 71147071. The reversal of 71147061 is 16074117.

It can be written as a sum of positive squares in only one way, i.e., 60746436 + 10400625 = 7794^2 + 3225^2 .

It is not a de Polignac number, because 71147061 - 2⁶ = 71146997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71147071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3952606 + ... + 3952623.

Almost surely, 2^71147061 is an apocalyptic number.

It is an amenable number.

71147061 is a deficient number, since it is larger than the sum of its proper divisors (31620929).

71147061 is a wasteful number, since it uses less digits than its factorization.

71147061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7905235 (or 7905232 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 71147061 is about 8434.8717239802. The cubic root of 71147061 is about 414.3674711135.

The spelling of 71147061 in words is "seventy-one million, one hundred forty-seven thousand, sixty-one".