71887017 has 8 divisors (see below), whose sum is σ = 97888896. Its totient is φ = 46904912.

The previous prime is 71887007. The next prime is 71887021. The reversal of 71887017 is 71078817.

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 71887017 - 2¹⁴ = 71870633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71887007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254778 + ... + 255059.

It is an arithmetic number, because the mean of its divisors is an integer number (12236112).

Almost surely, 2^71887017 is an apocalyptic number.

It is an amenable number.

71887017 is a deficient number, since it is larger than the sum of its proper divisors (26001879).

71887017 is a wasteful number, since it uses less digits than its factorization.

71887017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509887.

The product of its (nonzero) digits is 21952, while the sum is 39.

The square root of 71887017 is about 8478.6211732805. The cubic root of 71887017 is about 415.7990450302.

The spelling of 71887017 in words is "seventy-one million, eight hundred eighty-seven thousand, seventeen".