667075 has 6 divisors (see below), whose sum is σ = 827204. Its totient is φ = 533640.

The previous prime is 667021. The next prime is 667081. The reversal of 667075 is 570766.

667075 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 667075 - 2¹³ = 658883 is a prime.

It is a Duffinian number.

667075 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13317 + ... + 13366.

2⁶⁶⁷⁰⁷⁵ is an apocalyptic number.

667075 is a deficient number, since it is larger than the sum of its proper divisors (160129).

667075 is a wasteful number, since it uses less digits than its factorization.

667075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26693 (or 26688 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 667075 is about 816.7465947281. The cubic root of 667075 is about 87.3758784346.

It can be divided in two parts, 6 and 67075, that added together give a square (67081 = 259²).

The spelling of 667075 in words is "six hundred sixty-seven thousand, seventy-five".