71725871 has 8 divisors (see below), whose sum is σ = 82335360. Its totient is φ = 61207128.

The previous prime is 71725859. The next prime is 71725879. The reversal of 71725871 is 17852717.

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 71725871 - 2¹⁴ = 71709487 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 (71725879) 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, 20981 + ... + 24158.

It is an arithmetic number, because the mean of its divisors is an integer number (10291920).

Almost surely, 2^71725871 is an apocalyptic number.

71725871 is a deficient number, since it is larger than the sum of its proper divisors (10609489).

71725871 is a wasteful number, since it uses less digits than its factorization.

71725871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45373.

The product of its digits is 27440, while the sum is 38.

The square root of 71725871 is about 8469.1127634481. The cubic root of 71725871 is about 415.4881197057.

The spelling of 71725871 in words is "seventy-one million, seven hundred twenty-five thousand, eight hundred seventy-one".