8072804765 has 4 divisors (see below), whose sum is σ = 9687365724. Its totient is φ = 6458243808.

The previous prime is 8072804743. The next prime is 8072804771. The reversal of 8072804765 is 5674082708.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2100297241 + 5972507524 = 45829^2 + 77282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8072804765 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 807280472 + ... + 807280481.

It is an arithmetic number, because the mean of its divisors is an integer number (2421841431).

Almost surely, 2^8072804765 is an apocalyptic number.

It is an amenable number.

8072804765 is a deficient number, since it is larger than the sum of its proper divisors (1614560959).

8072804765 is a wasteful number, since it uses less digits than its factorization.

8072804765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614560958.

The product of its (nonzero) digits is 752640, while the sum is 47.

The square root of 8072804765 is about 89848.7883335107. The cubic root of 8072804765 is about 2006.0487516096.

The spelling of 8072804765 in words is "eight billion, seventy-two million, eight hundred four thousand, seven hundred sixty-five".