765218730 has 32 divisors (see below), whose sum is σ = 1933185600. Its totient is φ = 193318272.

The previous prime is 765218693. The next prime is 765218743. The reversal of 765218730 is 37812567.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670675 + ... + 671814.

It is an arithmetic number, because the mean of its divisors is an integer number (60412050).

Almost surely, 2^765218730 is an apocalyptic number.

765218730 is an abundant number, since it is smaller than the sum of its proper divisors (1167966870).

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

765218730 is a wasteful number, since it uses less digits than its factorization.

765218730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342518.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 765218730 is about 27662.5871891983. The cubic root of 765218730 is about 914.6645848751.

The spelling of 765218730 in words is "seven hundred sixty-five million, two hundred eighteen thousand, seven hundred thirty".