675905 has 4 divisors (see below), whose sum is σ = 811092. Its totient is φ = 540720.

The previous prime is 675889. The next prime is 675923. The reversal of 675905 is 509576.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 485809 + 190096 = 697^2 + 436^2 .

It is not a de Polignac number, because 675905 - 2⁴ = 675889 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 675905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67586 + ... + 67595.

It is an arithmetic number, because the mean of its divisors is an integer number (202773).

2⁶⁷⁵⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

675905 is a deficient number, since it is larger than the sum of its proper divisors (135187).

675905 is a wasteful number, since it uses less digits than its factorization.

675905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135186.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 675905 is about 822.1344172336. The cubic root of 675905 is about 87.7597181359.

The spelling of 675905 in words is "six hundred seventy-five thousand, nine hundred five".