423667 has 2 divisors, whose sum is σ = 423668. Its totient is φ = 423666.

The previous prime is 423649. The next prime is 423697. The reversal of 423667 is 766324.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211833 + 211834.

It is an arithmetic number, because the mean of its divisors is an integer number (211834).

2⁴²³⁶⁶⁷ is an apocalyptic number.

423667 is a deficient number, since it is larger than the sum of its proper divisors (1).

423667 is an equidigital number, since it uses as much as digits as its factorization.

423667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 28.

The square root of 423667 is about 650.8970732766. The cubic root of 423667 is about 75.1060425882.

The spelling of 423667 in words is "four hundred twenty-three thousand, six hundred sixty-seven".