765332161 has 16 divisors (see below), whose sum is σ = 875738880. Its totient is φ = 662532480.

The previous prime is 765332131. The next prime is 765332173. The reversal of 765332161 is 161233567.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-765332161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (765332101) 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, 876 + ... + 39133.

It is an arithmetic number, because the mean of its divisors is an integer number (54733680).

Almost surely, 2^765332161 is an apocalyptic number.

It is an amenable number.

765332161 is a deficient number, since it is larger than the sum of its proper divisors (110406719).

765332161 is a wasteful number, since it uses less digits than its factorization.

765332161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40104.

The product of its digits is 22680, while the sum is 34.

The square root of 765332161 is about 27664.6373733689. The cubic root of 765332161 is about 914.7097772662.

The spelling of 765332161 in words is "seven hundred sixty-five million, three hundred thirty-two thousand, one hundred sixty-one".