71740066 has 8 divisors (see below), whose sum is σ = 107646444. Its totient is φ = 35857920.

The previous prime is 71740057. The next prime is 71740069. The reversal of 71740066 is 66004717.

It can be written as a sum of positive squares in 2 ways, for example, as 68409441 + 3330625 = 8271^2 + 1825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (71740069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6826 + ... + 13786.

Almost surely, 2^71740066 is an apocalyptic number.

71740066 is a deficient number, since it is larger than the sum of its proper divisors (35906378).

71740066 is a wasteful number, since it uses less digits than its factorization.

71740066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12116.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 71740066 is about 8469.9507672713. The cubic root of 71740066 is about 415.5155271332.

The spelling of 71740066 in words is "seventy-one million, seven hundred forty thousand, sixty-six".