667097 has 4 divisors (see below), whose sum is σ = 706356. Its totient is φ = 627840.

The previous prime is 667091. The next prime is 667103. The reversal of 667097 is 790766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 790766 = 2 ⋅395383.

It is an interprime number because it is at equal distance from previous prime (667091) and next prime (667103).

It can be written as a sum of positive squares in 2 ways, for example, as 341056 + 326041 = 584^2 + 571^2 .

It is a cyclic number.

It is not a de Polignac number, because 667097 - 2⁴ = 667081 is a prime.

It is a super-3 number, since 3×667097³ = 890611333581965019, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19604 + ... + 19637.

It is an arithmetic number, because the mean of its divisors is an integer number (176589).

2⁶⁶⁷⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

667097 is a deficient number, since it is larger than the sum of its proper divisors (39259).

667097 is a wasteful number, since it uses less digits than its factorization.

667097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39258.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 667097 is about 816.7600626867. The cubic root of 667097 is about 87.3768389704.

The spelling of 667097 in words is "six hundred sixty-seven thousand, ninety-seven".