71086261 has 8 divisors (see below), whose sum is σ = 74678400. Its totient is φ = 67535952.

The previous prime is 71086247. The next prime is 71086297. The reversal of 71086261 is 16268017.

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 71086261 - 2⁵ = 71086229 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 (71083261) 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 7 ways as a sum of consecutive naturals, for example, 6945 + ... + 13798.

It is an arithmetic number, because the mean of its divisors is an integer number (9334800).

Almost surely, 2^71086261 is an apocalyptic number.

It is an amenable number.

71086261 is a deficient number, since it is larger than the sum of its proper divisors (3592139).

71086261 is a wasteful number, since it uses less digits than its factorization.

71086261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20915.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 71086261 is about 8431.2668680335. The cubic root of 71086261 is about 414.2494024173.

The spelling of 71086261 in words is "seventy-one million, eighty-six thousand, two hundred sixty-one".