667023 has 16 divisors (see below), whose sum is σ = 1061376. Its totient is φ = 364320.

The previous prime is 667021. The next prime is 667081. The reversal of 667023 is 320766.

It is not a de Polignac number, because 667023 - 2¹ = 667021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 666984 and 667002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667021) 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 15 ways as a sum of consecutive naturals, for example, 208 + ... + 1173.

It is an arithmetic number, because the mean of its divisors is an integer number (66336).

2⁶⁶⁷⁰²³ is an apocalyptic number.

667023 is a deficient number, since it is larger than the sum of its proper divisors (394353).

667023 is a wasteful number, since it uses less digits than its factorization.

667023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 667023 is about 816.7147604886. The cubic root of 667023 is about 87.3736079934.

Adding to 667023 its reverse (320766), we get a palindrome (987789).

The spelling of 667023 in words is "six hundred sixty-seven thousand, twenty-three".