765255049 has 8 divisors (see below), whose sum is σ = 824374152. Its totient is φ = 706172160.

The previous prime is 765255013. The next prime is 765255107. The reversal of 765255049 is 940552567.

It can be written as a sum of positive squares in 4 ways, for example, as 12027024 + 753228025 = 3468^2 + 27445^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 765255049 - 2⁹ = 765254537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 765254996 and 765255014.

It is not an unprimeable number, because it can be changed into a prime (765255749) 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 7 ways as a sum of consecutive naturals, for example, 48369 + ... + 62209.

It is an arithmetic number, because the mean of its divisors is an integer number (103046769).

Almost surely, 2^765255049 is an apocalyptic number.

It is an amenable number.

765255049 is a deficient number, since it is larger than the sum of its proper divisors (59119103).

765255049 is a wasteful number, since it uses less digits than its factorization.

765255049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18107.

The product of its (nonzero) digits is 378000, while the sum is 43.

The square root of 765255049 is about 27663.2436456754. The cubic root of 765255049 is about 914.6790553248.

The spelling of 765255049 in words is "seven hundred sixty-five million, two hundred fifty-five thousand, forty-nine".