71537066 has 4 divisors (see below), whose sum is σ = 107305602. Its totient is φ = 35768532.

The previous prime is 71537041. The next prime is 71537069. The reversal of 71537066 is 66073517.

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., 55815841 + 15721225 = 7471^2 + 3965^2 .

It is not an unprimeable number, because it can be changed into a prime (71537069) 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 as a sum of consecutive naturals, namely, 17884265 + ... + 17884268.

Almost surely, 2^71537066 is an apocalyptic number.

71537066 is a deficient number, since it is larger than the sum of its proper divisors (35768536).

71537066 is a wasteful number, since it uses less digits than its factorization.

71537066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35768535.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 71537066 is about 8457.9587371895. The cubic root of 71537066 is about 415.1232343169.

The spelling of 71537066 in words is "seventy-one million, five hundred thirty-seven thousand, sixty-six".