775768 has 24 divisors (see below), whose sum is σ = 1692900. Its totient is φ = 332304.

The previous prime is 775757. The next prime is 775777. The reversal of 775768 is 867577.

It is a self number, because there is not a number n which added to its sum of digits gives 775768.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 775768.

It is an unprimeable number.

775768 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 598 + ... + 1381.

2⁷⁷⁵⁷⁶⁸ is an apocalyptic number.

It is an amenable number.

775768 is an abundant number, since it is smaller than the sum of its proper divisors (917132).

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

775768 is a wasteful number, since it uses less digits than its factorization.

775768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999 (or 1988 counting only the distinct ones).

The product of its digits is 82320, while the sum is 40.

The square root of 775768 is about 880.7769297614. The cubic root of 775768 is about 91.8848591083.

Subtracting 775768 from its reverse (867577), we obtain a square (91809 = 303²).

The spelling of 775768 in words is "seven hundred seventy-five thousand, seven hundred sixty-eight".