71606536 has 8 divisors (see below), whose sum is σ = 134262270. Its totient is φ = 35803264.

The previous prime is 71606531. The next prime is 71606543. The reversal of 71606536 is 63560617.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 53202436 + 18404100 = 7294^2 + 4290^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (71606531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4475401 + ... + 4475416.

Almost surely, 2^71606536 is an apocalyptic number.

It is an amenable number.

71606536 is a deficient number, since it is larger than the sum of its proper divisors (62655734).

71606536 is a wasteful number, since it uses less digits than its factorization.

71606536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8950823 (or 8950819 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 71606536 is about 8462.0645235073. The cubic root of 71606536 is about 415.2575669206.

The spelling of 71606536 in words is "seventy-one million, six hundred six thousand, five hundred thirty-six".