71330765 has 16 divisors (see below), whose sum is σ = 95553216. Its totient is φ = 50668800.

The previous prime is 71330747. The next prime is 71330767. The reversal of 71330765 is 56703317.

It is not a de Polignac number, because 71330765 - 2²⁰ = 70282189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71330767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12716 + ... + 17445.

It is an arithmetic number, because the mean of its divisors is an integer number (5972076).

Almost surely, 2^71330765 is an apocalyptic number.

It is an amenable number.

71330765 is a deficient number, since it is larger than the sum of its proper divisors (24222451).

71330765 is a wasteful number, since it uses less digits than its factorization.

71330765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30220.

The product of its (nonzero) digits is 13230, while the sum is 32.

The square root of 71330765 is about 8445.7542587977. The cubic root of 71330765 is about 414.7238013168.

The spelling of 71330765 in words is "seventy-one million, three hundred thirty thousand, seven hundred sixty-five".