675561 has 8 divisors (see below), whose sum is σ = 914464. Its totient is φ = 443520.

The previous prime is 675559. The next prime is 675569. The reversal of 675561 is 165576.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 675561 - 2¹ = 675559 is a prime.

It is a Duffinian number.

It is a Curzon number.

675561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (675569) 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 7 ways as a sum of consecutive naturals, for example, 1480 + ... + 1881.

It is an arithmetic number, because the mean of its divisors is an integer number (114308).

2⁶⁷⁵⁵⁶¹ is an apocalyptic number.

It is an amenable number.

675561 is a deficient number, since it is larger than the sum of its proper divisors (238903).

675561 is a wasteful number, since it uses less digits than its factorization.

675561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3431.

The product of its digits is 6300, while the sum is 30.

The square root of 675561 is about 821.9251790765. The cubic root of 675561 is about 87.7448272533.

The spelling of 675561 in words is "six hundred seventy-five thousand, five hundred sixty-one".