675785 has 12 divisors (see below), whose sum is σ = 892164. Its totient is φ = 491040.

The previous prime is 675781. The next prime is 675797. The reversal of 675785 is 587576.

It can be written as a sum of positive squares in 2 ways, for example, as 116281 + 559504 = 341^2 + 748^2 .

It is not a de Polignac number, because 675785 - 2² = 675781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (675781) 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, 47 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (74347).

2⁶⁷⁵⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

675785 is a deficient number, since it is larger than the sum of its proper divisors (216379).

675785 is a wasteful number, since it uses less digits than its factorization.

675785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144 (or 1133 counting only the distinct ones).

The product of its digits is 58800, while the sum is 38.

The square root of 675785 is about 822.0614332275. The cubic root of 675785 is about 87.7545242159.

Subtracting from 675785 its reverse (587576), we obtain a square (88209 = 297²).

The spelling of 675785 in words is "six hundred seventy-five thousand, seven hundred eighty-five".