765645104 has 40 divisors (see below), whose sum is σ = 1702510080. Its totient is φ = 326749248.

The previous prime is 765645079. The next prime is 765645121. The reversal of 765645104 is 401546567.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12467 + ... + 41069.

It is an arithmetic number, because the mean of its divisors is an integer number (42562752).

Almost surely, 2^765645104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 765645104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851255040).

765645104 is an abundant number, since it is smaller than the sum of its proper divisors (936864976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

765645104 is a wasteful number, since it uses less digits than its factorization.

765645104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28857 (or 28851 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 765645104 is about 27670.2928065462. The cubic root of 765645104 is about 914.8344346936.

The spelling of 765645104 in words is "seven hundred sixty-five million, six hundred forty-five thousand, one hundred four".