71087117 has 8 divisors (see below), whose sum is σ = 72326592. Its totient is φ = 69854400.

The previous prime is 71087083. The next prime is 71087119. The reversal of 71087117 is 71178017.

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 71087117 - 2¹⁴ = 71070733 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 (71087119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22442 + ... + 25412.

It is an arithmetic number, because the mean of its divisors is an integer number (9040824).

Almost surely, 2^71087117 is an apocalyptic number.

It is an amenable number.

71087117 is a deficient number, since it is larger than the sum of its proper divisors (1239475).

71087117 is a wasteful number, since it uses less digits than its factorization.

71087117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379.

The product of its (nonzero) digits is 2744, while the sum is 32.

The square root of 71087117 is about 8431.3176313077. The cubic root of 71087117 is about 414.2510651674.

The spelling of 71087117 in words is "seventy-one million, eighty-seven thousand, one hundred seventeen".