675666 has 12 divisors (see below), whose sum is σ = 1463982. Its totient is φ = 225216.

The previous prime is 675643. The next prime is 675713. The reversal of 675666 is 666576.

675666 = 145² + 146² + ... + 171².

675666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 594441 + 81225 = 771^2 + 285^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 675666.

It is an unprimeable number.

675666 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18751 + ... + 18786.

2⁶⁷⁵⁶⁶⁶ is an apocalyptic number.

675666 is an abundant number, since it is smaller than the sum of its proper divisors (788316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

675666 is a wasteful number, since it uses less digits than its factorization.

675666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37545 (or 37542 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 675666 is about 821.9890510220. The cubic root of 675666 is about 87.7493729714.

The spelling of 675666 in words is "six hundred seventy-five thousand, six hundred sixty-six".