220667 has 2 divisors, whose sum is σ = 220668. Its totient is φ = 220666.

The previous prime is 220663. The next prime is 220673. The reversal of 220667 is 766022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220667 - 2² = 220663 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 220667.

It is not a weakly prime, because it can be changed into another prime (220663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110333 + 110334.

It is an arithmetic number, because the mean of its divisors is an integer number (110334).

2²²⁰⁶⁶⁷ is an apocalyptic number.

220667 is a deficient number, since it is larger than the sum of its proper divisors (1).

220667 is an equidigital number, since it uses as much as digits as its factorization.

220667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 220667 is about 469.7520622626. The cubic root of 220667 is about 60.4290541914.

Adding to 220667 its reverse (766022), we get a palindrome (986689).

The spelling of 220667 in words is "two hundred twenty thousand, six hundred sixty-seven".