775112 has 32 divisors (see below), whose sum is σ = 1625400. Its totient is φ = 344064.

The previous prime is 775097. The next prime is 775121. The reversal of 775112 is 211577.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 729316 + 45796 = 854^2 + 214^2 .

It is a super-2 number, since 2×775112² = 1201597225088, which contains 22 as substring.

It is an unprimeable number.

775112 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 7 ways as a sum of consecutive naturals, for example, 2888 + ... + 3144.

2⁷⁷⁵¹¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (812700).

775112 is an abundant number, since it is smaller than the sum of its proper divisors (850288).

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

775112 is a wasteful number, since it uses less digits than its factorization.

775112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 301 counting only the distinct ones).

The product of its digits is 490, while the sum is 23.

The square root of 775112 is about 880.4044525103. The cubic root of 775112 is about 91.8589521078.

Adding to 775112 its reverse (211577), we get a palindrome (986689).

The spelling of 775112 in words is "seven hundred seventy-five thousand, one hundred twelve".