675641 has 4 divisors (see below), whose sum is σ = 677412. Its totient is φ = 673872.

The previous prime is 675629. The next prime is 675643. The reversal of 675641 is 146576.

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 42025 + 633616 = 205^2 + 796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-675641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675643) 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 3 ways as a sum of consecutive naturals, for example, 50 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (169353).

2⁶⁷⁵⁶⁴¹ is an apocalyptic number.

It is an amenable number.

675641 is a deficient number, since it is larger than the sum of its proper divisors (1771).

675641 is a wasteful number, since it uses less digits than its factorization.

675641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770.

The product of its digits is 5040, while the sum is 29.

The square root of 675641 is about 821.9738438661. The cubic root of 675641 is about 87.7482907003.

The spelling of 675641 in words is "six hundred seventy-five thousand, six hundred forty-one".