667065 has 16 divisors (see below), whose sum is σ = 1219968. Its totient is φ = 304896.

The previous prime is 667021. The next prime is 667081. The reversal of 667065 is 560766.

It is not a de Polignac number, because 667065 - 2⁷ = 666937 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3072 + ... + 3281.

It is an arithmetic number, because the mean of its divisors is an integer number (76248).

2⁶⁶⁷⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

667065 is a deficient number, since it is larger than the sum of its proper divisors (552903).

667065 is a wasteful number, since it uses less digits than its factorization.

667065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6368.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 667065 is about 816.7404728554. The cubic root of 667065 is about 87.3754418204.

The spelling of 667065 in words is "six hundred sixty-seven thousand, sixty-five".