675805 has 16 divisors (see below), whose sum is σ = 900144. Its totient is φ = 483840.

The previous prime is 675797. The next prime is 675817. The reversal of 675805 is 508576.

It can be written as a sum of positive squares in 8 ways, for example, as 1764 + 674041 = 42^2 + 821^2 .

It is not a de Polignac number, because 675805 - 2³ = 675797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2265 + ... + 2545.

It is an arithmetic number, because the mean of its divisors is an integer number (56259).

2⁶⁷⁵⁸⁰⁵ is an apocalyptic number.

675805 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

675805 is a deficient number, since it is larger than the sum of its proper divisors (224339).

675805 is a wasteful number, since it uses less digits than its factorization.

675805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 675805 is about 822.0735976785. The cubic root of 675805 is about 87.7553899120.

The spelling of 675805 in words is "six hundred seventy-five thousand, eight hundred five".