71366087 has 4 divisors (see below), whose sum is σ = 76855800. Its totient is φ = 65876376.

The previous prime is 71366039. The next prime is 71366089. The reversal of 71366087 is 78066317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78066317 = 7 ⋅11152331.

It is a cyclic number.

It is not a de Polignac number, because 71366087 - 2⁸ = 71365831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71366087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71366089) 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 3 ways as a sum of consecutive naturals, for example, 2744837 + ... + 2744862.

It is an arithmetic number, because the mean of its divisors is an integer number (19213950).

Almost surely, 2^71366087 is an apocalyptic number.

71366087 is a deficient number, since it is larger than the sum of its proper divisors (5489713).

71366087 is a wasteful number, since it uses less digits than its factorization.

71366087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5489712.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 71366087 is about 8447.8451098490. The cubic root of 71366087 is about 414.7922451680.

The spelling of 71366087 in words is "seventy-one million, three hundred sixty-six thousand, eighty-seven".