71713845 has 24 divisors (see below), whose sum is σ = 142062336. Its totient is φ = 32783328.

The previous prime is 71713843. The next prime is 71713867. The reversal of 71713845 is 54831717.

It is not a de Polignac number, because 71713845 - 2¹ = 71713843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71713841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113517 + ... + 114146.

It is an arithmetic number, because the mean of its divisors is an integer number (5919264).

Almost surely, 2^71713845 is an apocalyptic number.

It is an amenable number.

71713845 is a deficient number, since it is larger than the sum of its proper divisors (70348491).

71713845 is a wasteful number, since it uses less digits than its factorization.

71713845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227681 (or 227678 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 71713845 is about 8468.4027419579. The cubic root of 71713845 is about 415.4648973112.

The spelling of 71713845 in words is "seventy-one million, seven hundred thirteen thousand, eight hundred forty-five".