667700 has 36 divisors (see below), whose sum is σ = 1583232. Its totient is φ = 242400.

The previous prime is 667699. The next prime is 667727. The reversal of 667700 is 7766.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 667700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 797 + ... + 1403.

2⁶⁶⁷⁷⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (791616).

667700 is an abundant number, since it is smaller than the sum of its proper divisors (915532).

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

667700 is a wasteful number, since it uses less digits than its factorization.

667700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 667700 is about 817.1291207637. The cubic root of 667700 is about 87.4031581646.

The spelling of 667700 in words is "six hundred sixty-seven thousand, seven hundred".