71707573 has 4 divisors (see below), whose sum is σ = 81951520. Its totient is φ = 61463628.

The previous prime is 71707561. The next prime is 71707607. The reversal of 71707573 is 37570717.

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 a de Polignac number, because none of the positive numbers 2^k-71707573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71707523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5121963 + ... + 5121976.

It is an arithmetic number, because the mean of its divisors is an integer number (20487880).

Almost surely, 2^71707573 is an apocalyptic number.

It is an amenable number.

71707573 is a deficient number, since it is larger than the sum of its proper divisors (10243947).

71707573 is a wasteful number, since it uses less digits than its factorization.

71707573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10243946.

The product of its (nonzero) digits is 36015, while the sum is 37.

The square root of 71707573 is about 8468.0324160929. The cubic root of 71707573 is about 415.4527849508.

The spelling of 71707573 in words is "seventy-one million, seven hundred seven thousand, five hundred seventy-three".