65705071 has 4 divisors (see below), whose sum is σ = 65771200. Its totient is φ = 65638944.

The previous prime is 65705047. The next prime is 65705099. The reversal of 65705071 is 17050756.

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

It is a cyclic number.

It is not a de Polignac number, because 65705071 - 2¹¹ = 65703023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65700071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31551 + ... + 33568.

It is an arithmetic number, because the mean of its divisors is an integer number (16442800).

Almost surely, 2^65705071 is an apocalyptic number.

65705071 is a deficient number, since it is larger than the sum of its proper divisors (66129).

65705071 is a wasteful number, since it uses less digits than its factorization.

65705071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66128.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 65705071 is about 8105.8664558454. The cubic root of 65705071 is about 403.5211441580.

The spelling of 65705071 in words is "sixty-five million, seven hundred five thousand, seventy-one".