667105 has 8 divisors (see below), whose sum is σ = 809064. Its totient is φ = 528000.

The previous prime is 667103. The next prime is 667123. The reversal of 667105 is 501766.

667105 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 4 ways, for example, as 389376 + 277729 = 624^2 + 527^2 .

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

It is not a de Polignac number, because 667105 - 2¹ = 667103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667105.

It is not an unprimeable number, because it can be changed into a prime (667103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156 + ... + 1165.

It is an arithmetic number, because the mean of its divisors is an integer number (101133).

2⁶⁶⁷¹⁰⁵ is an apocalyptic number.

It is an amenable number.

667105 is a deficient number, since it is larger than the sum of its proper divisors (141959).

667105 is a wasteful number, since it uses less digits than its factorization.

667105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 667105 is about 816.7649600711. The cubic root of 667105 is about 87.3771882509.

The spelling of 667105 in words is "six hundred sixty-seven thousand, one hundred five".