667583 has 4 divisors (see below), whose sum is σ = 762960. Its totient is φ = 572208.

The previous prime is 667577. The next prime is 667631. The reversal of 667583 is 385766.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 385766 = 2 ⋅192883.

It is not a de Polignac number, because 667583 - 2⁶ = 667519 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667553) 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, 47678 + ... + 47691.

It is an arithmetic number, because the mean of its divisors is an integer number (190740).

2⁶⁶⁷⁵⁸³ is an apocalyptic number.

667583 is a deficient number, since it is larger than the sum of its proper divisors (95377).

667583 is an equidigital number, since it uses as much as digits as its factorization.

667583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95376.

The product of its digits is 30240, while the sum is 35.

The square root of 667583 is about 817.0575255146. The cubic root of 667583 is about 87.3980526947.

The spelling of 667583 in words is "six hundred sixty-seven thousand, five hundred eighty-three".