71087423 has 8 divisors (see below), whose sum is σ = 77610960. Its totient is φ = 64574080.

The previous prime is 71087413. The next prime is 71087437. The reversal of 71087423 is 32478017.

It is a happy number.

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 71087423 - 2²⁰ = 70038847 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 71087423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71087413) 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, 25943 + ... + 28551.

It is an arithmetic number, because the mean of its divisors is an integer number (9701370).

Almost surely, 2^71087423 is an apocalyptic number.

71087423 is a deficient number, since it is larger than the sum of its proper divisors (6523537).

71087423 is a wasteful number, since it uses less digits than its factorization.

71087423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 71087423 is about 8431.3357779180. The cubic root of 71087423 is about 414.2516595585.

The spelling of 71087423 in words is "seventy-one million, eighty-seven thousand, four hundred twenty-three".