775972 has 6 divisors (see below), whose sum is σ = 1357958. Its totient is φ = 387984.

The previous prime is 775963. The next prime is 775987. The reversal of 775972 is 279577.

It can be written as a sum of positive squares in only one way, i.e., 729316 + 46656 = 854^2 + 216^2 .

It is a plaindrome in base 11.

It is an unprimeable number.

775972 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 as a sum of consecutive naturals, namely, 96993 + ... + 97000.

2⁷⁷⁵⁹⁷² is an apocalyptic number.

It is an amenable number.

775972 is a deficient number, since it is larger than the sum of its proper divisors (581986).

775972 is a wasteful number, since it uses less digits than its factorization.

775972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193997 (or 193995 counting only the distinct ones).

The product of its digits is 30870, while the sum is 37.

The square root of 775972 is about 880.8927289971. The cubic root of 775972 is about 91.8929125763.

The spelling of 775972 in words is "seven hundred seventy-five thousand, nine hundred seventy-two".