71124887 has 8 divisors (see below), whose sum is σ = 72920304. Its totient is φ = 69346368.

The previous prime is 71124883. The next prime is 71124917. The reversal of 71124887 is 78842117.

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 71124887 - 2² = 71124883 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 71124887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71124883) 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, 4523 + ... + 12755.

It is an arithmetic number, because the mean of its divisors is an integer number (9115038).

Almost surely, 2^71124887 is an apocalyptic number.

71124887 is a deficient number, since it is larger than the sum of its proper divisors (1795417).

71124887 is a wasteful number, since it uses less digits than its factorization.

71124887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8449.

The product of its digits is 25088, while the sum is 38.

The square root of 71124887 is about 8433.5571972923. The cubic root of 71124887 is about 414.3244187892.

The spelling of 71124887 in words is "seventy-one million, one hundred twenty-four thousand, eight hundred eighty-seven".