667199 has 8 divisors (see below), whose sum is σ = 761040. Its totient is φ = 579456.

The previous prime is 667181. The next prime is 667211. The reversal of 667199 is 991766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1289 + ... + 1730.

It is an arithmetic number, because the mean of its divisors is an integer number (95130).

2⁶⁶⁷¹⁹⁹ is an apocalyptic number.

667199 is a deficient number, since it is larger than the sum of its proper divisors (93841).

667199 is a wasteful number, since it uses less digits than its factorization.

667199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049.

The product of its digits is 20412, while the sum is 38.

The square root of 667199 is about 816.8225021386. The cubic root of 667199 is about 87.3812920876.

The spelling of 667199 in words is "six hundred sixty-seven thousand, one hundred ninety-nine".