775868 has 12 divisors (see below), whose sum is σ = 1401792. Its totient is φ = 375360.

The previous prime is 775861. The next prime is 775871. The reversal of 775868 is 868577.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775861) by changing a digit.

775868 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3005 + ... + 3252.

It is an arithmetic number, because the mean of its divisors is an integer number (116816).

2⁷⁷⁵⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

775868 is a deficient number, since it is larger than the sum of its proper divisors (625924).

775868 is a wasteful number, since it uses less digits than its factorization.

775868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6292 (or 6290 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 775868 is about 880.8336959949. The cubic root of 775868 is about 91.8888070631. Note that the first 4 decimals are identical.

The spelling of 775868 in words is "seven hundred seventy-five thousand, eight hundred sixty-eight".