667960 has 16 divisors (see below), whose sum is σ = 1503000. Its totient is φ = 267168.

The previous prime is 667949. The next prime is 667963. The reversal of 667960 is 69766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8310 + ... + 8389.

2⁶⁶⁷⁹⁶⁰ is an apocalyptic number.

It is an amenable number.

667960 is an abundant number, since it is smaller than the sum of its proper divisors (835040).

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

667960 is a wasteful number, since it uses less digits than its factorization.

667960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16710 (or 16706 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 667960 is about 817.2881988626. The cubic root of 667960 is about 87.4145015185.

The spelling of 667960 in words is "six hundred sixty-seven thousand, nine hundred sixty".