856168 has 8 divisors (see below), whose sum is σ = 1605330. Its totient is φ = 428080.

The previous prime is 856153. The next prime is 856169. The reversal of 856168 is 861658.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 850084 + 6084 = 922^2 + 78^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (856169) by changing a digit.

856168 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 (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53503 + ... + 53518.

2⁸⁵⁶¹⁶⁸ is an apocalyptic number.

It is an amenable number.

856168 is a deficient number, since it is larger than the sum of its proper divisors (749162).

856168 is a wasteful number, since it uses less digits than its factorization.

856168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107027 (or 107023 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 856168 is about 925.2934669606. The cubic root of 856168 is about 94.9553991933.

It can be divided in two parts, 856 and 168, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 856168 in words is "eight hundred fifty-six thousand, one hundred sixty-eight".