71108887 has 4 divisors (see below), whose sum is σ = 74851480. Its totient is φ = 67366296.

The previous prime is 71108867. The next prime is 71108897. The reversal of 71108887 is 78880117.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71108887 - 2¹⁹ = 70584599 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 (71108867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1871268 + ... + 1871305.

It is an arithmetic number, because the mean of its divisors is an integer number (18712870).

Almost surely, 2^71108887 is an apocalyptic number.

71108887 is a deficient number, since it is larger than the sum of its proper divisors (3742593).

71108887 is a wasteful number, since it uses less digits than its factorization.

71108887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742592.

The product of its (nonzero) digits is 25088, while the sum is 40.

The square root of 71108887 is about 8432.6085525180. The cubic root of 71108887 is about 414.2933481465.

The spelling of 71108887 in words is "seventy-one million, one hundred eight thousand, eight hundred eighty-seven".