675655 has 4 divisors (see below), whose sum is σ = 810792. Its totient is φ = 540520.

The previous prime is 675643. The next prime is 675713. The reversal of 675655 is 556576.

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

It is not a de Polignac number, because 675655 - 2¹³ = 667463 is a prime.

It is a Duffinian number.

675655 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 675655.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 67561 + ... + 67570.

It is an arithmetic number, because the mean of its divisors is an integer number (202698).

2⁶⁷⁵⁶⁵⁵ is an apocalyptic number.

675655 is a deficient number, since it is larger than the sum of its proper divisors (135137).

675655 is a wasteful number, since it uses less digits than its factorization.

675655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135136.

The product of its digits is 31500, while the sum is 34.

The square root of 675655 is about 821.9823599080. The cubic root of 675655 is about 87.7488967754.

It can be divided in two parts, 67 and 5655, that multiplied together give a triangular number (378885 = T₈₇₀).

The spelling of 675655 in words is "six hundred seventy-five thousand, six hundred fifty-five".