681175 has 12 divisors (see below), whose sum is σ = 921816. Its totient is φ = 495200.

The previous prime is 681167. The next prime is 681179. The reversal of 681175 is 571186.

It is a happy number.

It is not a de Polignac number, because 681175 - 2³ = 681167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681179) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 964 + ... + 1513.

It is an arithmetic number, because the mean of its divisors is an integer number (76818).

2⁶⁸¹¹⁷⁵ is an apocalyptic number.

681175 is a deficient number, since it is larger than the sum of its proper divisors (240641).

681175 is a wasteful number, since it uses less digits than its factorization.

681175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498 (or 2493 counting only the distinct ones).

The product of its digits is 1680, while the sum is 28.

The square root of 681175 is about 825.3332660205. Note that the first 3 decimals coincide. The cubic root of 681175 is about 87.9872140514.

It can be divided in two parts, 6811 and 75, that added together give a palindrome (6886).

The spelling of 681175 in words is "six hundred eighty-one thousand, one hundred seventy-five".