775338965 has 4 divisors (see below), whose sum is σ = 930406764. Its totient is φ = 620271168.

The previous prime is 775338953. The next prime is 775338979. The reversal of 775338965 is 569833577.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 535181956 + 240157009 = 23134^2 + 15497^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-775338965 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77533892 + ... + 77533901.

It is an arithmetic number, because the mean of its divisors is an integer number (232601691).

Almost surely, 2^775338965 is an apocalyptic number.

It is an amenable number.

775338965 is a deficient number, since it is larger than the sum of its proper divisors (155067799).

775338965 is a wasteful number, since it uses less digits than its factorization.

775338965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155067798.

The product of its digits is 4762800, while the sum is 53.

The square root of 775338965 is about 27844.9091397332. The cubic root of 775338965 is about 918.6791714877.

The spelling of 775338965 in words is "seven hundred seventy-five million, three hundred thirty-eight thousand, nine hundred sixty-five".