71723536 has 10 divisors (see below), whose sum is σ = 138964382. Its totient is φ = 35861760.

The previous prime is 71723507. The next prime is 71723539. The reversal of 71723536 is 63532717.

It can be written as a sum of positive squares in only one way, i.e., 67897600 + 3825936 = 8240^2 + 1956^2 .

It is not an unprimeable number, because it can be changed into a prime (71723539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2241345 + ... + 2241376.

Almost surely, 2^71723536 is an apocalyptic number.

It is an amenable number.

71723536 is a deficient number, since it is larger than the sum of its proper divisors (67240846).

71723536 is a wasteful number, since it uses less digits than its factorization.

71723536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482729 (or 4482723 counting only the distinct ones).

The product of its digits is 26460, while the sum is 34.

The square root of 71723536 is about 8468.9749084526. The cubic root of 71723536 is about 415.4836109872.

The spelling of 71723536 in words is "seventy-one million, seven hundred twenty-three thousand, five hundred thirty-six".