71755864 has 8 divisors (see below), whose sum is σ = 134542260. Its totient is φ = 35877928.

The previous prime is 71755841. The next prime is 71755891. The reversal of 71755864 is 46855717.

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

It is a self number, because there is not a number n which added to its sum of digits gives 71755864.

It is a congruent number.

It is an unprimeable number.

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, 4484734 + ... + 4484749.

Almost surely, 2^71755864 is an apocalyptic number.

It is an amenable number.

71755864 is a deficient number, since it is larger than the sum of its proper divisors (62786396).

71755864 is a wasteful number, since it uses less digits than its factorization.

71755864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8969489 (or 8969485 counting only the distinct ones).

The product of its digits is 235200, while the sum is 43.

The square root of 71755864 is about 8470.8833069521. The cubic root of 71755864 is about 415.5460253512.

The spelling of 71755864 in words is "seventy-one million, seven hundred fifty-five thousand, eight hundred sixty-four".