71771017 has 12 divisors (see below), whose sum is σ = 75499984. Its totient is φ = 68218920.

The previous prime is 71770997. The next prime is 71771023. The reversal of 71771017 is 71017717.

It is a de Polignac number, because none of the positive numbers 2^k-71771017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71771017.

It is not an unprimeable number, because it can be changed into a prime (71771047) 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 11 ways as a sum of consecutive naturals, for example, 111298 + ... + 111940.

Almost surely, 2^71771017 is an apocalyptic number.

It is an amenable number.

71771017 is a deficient number, since it is larger than the sum of its proper divisors (3728967).

71771017 is a wasteful number, since it uses less digits than its factorization.

71771017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900 (or 877 counting only the distinct ones).

The product of its (nonzero) digits is 2401, while the sum is 31.

The square root of 71771017 is about 8471.7776764974. Note that the first 3 decimals coincide. The cubic root of 71771017 is about 415.5752741837.

The spelling of 71771017 in words is "seventy-one million, seven hundred seventy-one thousand, seventeen".