667117 has 4 divisors (see below), whose sum is σ = 727776. Its totient is φ = 606460.

The previous prime is 667103. The next prime is 667123. The reversal of 667117 is 711766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 667117 - 2⁷ = 666989 is a prime.

It is a Duffinian number.

667117 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667127) 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, 30313 + ... + 30334.

It is an arithmetic number, because the mean of its divisors is an integer number (181944).

2⁶⁶⁷¹¹⁷ is an apocalyptic number.

It is an amenable number.

667117 is a deficient number, since it is larger than the sum of its proper divisors (60659).

667117 is a wasteful number, since it uses less digits than its factorization.

667117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60658.

The product of its digits is 1764, while the sum is 28.

The square root of 667117 is about 816.7723060927. The cubic root of 667117 is about 87.3777121664.

It can be divided in two parts, 667 and 117, that added together give a square (784 = 28²).

The spelling of 667117 in words is "six hundred sixty-seven thousand, one hundred seventeen".