71636066 has 4 divisors (see below), whose sum is σ = 107454102. Its totient is φ = 35818032.

The previous prime is 71636041. The next prime is 71636087. The reversal of 71636066 is 66063617.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 69472225 + 2163841 = 8335^2 + 1471^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17909015 + ... + 17909018.

Almost surely, 2^71636066 is an apocalyptic number.

71636066 is a deficient number, since it is larger than the sum of its proper divisors (35818036).

71636066 is a wasteful number, since it uses less digits than its factorization.

71636066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35818035.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 71636066 is about 8463.8091897207. The cubic root of 71636066 is about 415.3146421140.

The spelling of 71636066 in words is "seventy-one million, six hundred thirty-six thousand, sixty-six".