765550266 has 32 divisors (see below), whose sum is σ = 1651151040. Its totient is φ = 235229184.

The previous prime is 765550213. The next prime is 765550267. The reversal of 765550266 is 662055567.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (765550267) by changing a digit.

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, 53601 + ... + 66363.

It is an arithmetic number, because the mean of its divisors is an integer number (51598470).

Almost surely, 2^765550266 is an apocalyptic number.

765550266 is an abundant number, since it is smaller than the sum of its proper divisors (885600774).

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

765550266 is a wasteful number, since it uses less digits than its factorization.

765550266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13550.

The product of its (nonzero) digits is 378000, while the sum is 42.

The square root of 765550266 is about 27668.5790383243. The cubic root of 765550266 is about 914.7966605995.

The spelling of 765550266 in words is "seven hundred sixty-five million, five hundred fifty thousand, two hundred sixty-six".