667005 has 16 divisors (see below), whose sum is σ = 1088640. Its totient is φ = 348608.

The previous prime is 666989. The next prime is 667013. The reversal of 667005 is 500766.

It is a cyclic number.

It is not a de Polignac number, because 667005 - 2⁴ = 666989 is a prime.

667005 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376 + ... + 1214.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2⁶⁶⁷⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

667005 is a deficient number, since it is larger than the sum of its proper divisors (421635).

667005 is a wasteful number, since it uses less digits than its factorization.

667005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 667005 is about 816.7037406551. The cubic root of 667005 is about 87.3728220439.

The spelling of 667005 in words is "six hundred sixty-seven thousand, five".