71687113 has 8 divisors (see below), whose sum is σ = 79204608. Its totient is φ = 64536384.

The previous prime is 71687071. The next prime is 71687117. The reversal of 71687113 is 31178617.

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 71687113 - 2¹³ = 71678921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71687117) 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, 91281 + ... + 92062.

It is an arithmetic number, because the mean of its divisors is an integer number (9900576).

Almost surely, 2^71687113 is an apocalyptic number.

It is an amenable number.

71687113 is a deficient number, since it is larger than the sum of its proper divisors (7517495).

71687113 is a wasteful number, since it uses less digits than its factorization.

71687113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183383.

The product of its digits is 7056, while the sum is 34.

The square root of 71687113 is about 8466.8242570636. The cubic root of 71687113 is about 415.4132680993.

The spelling of 71687113 in words is "seventy-one million, six hundred eighty-seven thousand, one hundred thirteen".