71859087 has 12 divisors (see below), whose sum is σ = 103871040. Its totient is φ = 47871648.

The previous prime is 71859049. The next prime is 71859097. The reversal of 71859087 is 78095817.

It is not a de Polignac number, because 71859087 - 2⁷ = 71858959 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71859097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19714 + ... + 23072.

It is an arithmetic number, because the mean of its divisors is an integer number (8655920).

Almost surely, 2^71859087 is an apocalyptic number.

71859087 is a deficient number, since it is larger than the sum of its proper divisors (32011953).

71859087 is a wasteful number, since it uses less digits than its factorization.

71859087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5742 (or 5739 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The square root of 71859087 is about 8476.9739294161. The cubic root of 71859087 is about 415.7451884269.

The spelling of 71859087 in words is "seventy-one million, eight hundred fifty-nine thousand, eighty-seven".