667950 has 48 divisors (see below), whose sum is σ = 1706736. Its totient is φ = 172800.

The previous prime is 667949. The next prime is 667963. The reversal of 667950 is 59766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9114 + ... + 9186.

It is an arithmetic number, because the mean of its divisors is an integer number (35557).

2⁶⁶⁷⁹⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (853368).

667950 is an abundant number, since it is smaller than the sum of its proper divisors (1038786).

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

667950 is a wasteful number, since it uses less digits than its factorization.

667950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 667950 is about 817.2820810467. The cubic root of 667950 is about 87.4140652901.

The spelling of 667950 in words is "six hundred sixty-seven thousand, nine hundred fifty".