675643 has 2 divisors, whose sum is σ = 675644. Its totient is φ = 675642.

The previous prime is 675629. The next prime is 675713. The reversal of 675643 is 346576.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 675643 - 2⁵ = 675611 is a prime.

675643 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (675743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337821 + 337822.

It is an arithmetic number, because the mean of its divisors is an integer number (337822).

2⁶⁷⁵⁶⁴³ is an apocalyptic number.

675643 is a deficient number, since it is larger than the sum of its proper divisors (1).

675643 is an equidigital number, since it uses as much as digits as its factorization.

675643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

The square root of 675643 is about 821.9750604489. The cubic root of 675643 is about 87.7483772829.

The spelling of 675643 in words is "six hundred seventy-five thousand, six hundred forty-three".