675569 has 2 divisors, whose sum is σ = 675570. Its totient is φ = 675568.

The previous prime is 675559. The next prime is 675581. The reversal of 675569 is 965576.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 577600 + 97969 = 760^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 675569 - 2⁴ = 675553 is a prime.

It is a super-2 number, since 2×675569² = 912786947522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (675539) 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 as a sum of consecutive naturals, namely, 337784 + 337785.

It is an arithmetic number, because the mean of its divisors is an integer number (337785).

2⁶⁷⁵⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

675569 is a deficient number, since it is larger than the sum of its proper divisors (1).

675569 is an equidigital number, since it uses as much as digits as its factorization.

675569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 38.

The square root of 675569 is about 821.9300456852. The cubic root of 675569 is about 87.7451736103.

It can be divided in two parts, 6755 and 69, that multiplied together give a triangular number (466095 = T₉₆₅).

The spelling of 675569 in words is "six hundred seventy-five thousand, five hundred sixty-nine".