71712573 has 4 divisors (see below), whose sum is σ = 95616768. Its totient is φ = 47808380.

The previous prime is 71712569. The next prime is 71712583. The reversal of 71712573 is 37521717.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71712573 - 2² = 71712569 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71712503) 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, 11952093 + ... + 11952098.

It is an arithmetic number, because the mean of its divisors is an integer number (23904192).

Almost surely, 2^71712573 is an apocalyptic number.

It is an amenable number.

71712573 is a deficient number, since it is larger than the sum of its proper divisors (23904195).

71712573 is a wasteful number, since it uses less digits than its factorization.

71712573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23904194.

The product of its digits is 10290, while the sum is 33.

The square root of 71712573 is about 8468.3276389143. The cubic root of 71712573 is about 415.4624409075.

The spelling of 71712573 in words is "seventy-one million, seven hundred twelve thousand, five hundred seventy-three".