220611667 has 2 divisors, whose sum is σ = 220611668. Its totient is φ = 220611666.

The previous prime is 220611661. The next prime is 220611689. The reversal of 220611667 is 766116022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220611667 - 2¹⁵ = 220578899 is a prime.

It is not a weakly prime, because it can be changed into another prime (220611661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110305833 + 110305834.

It is an arithmetic number, because the mean of its divisors is an integer number (110305834).

Almost surely, 2^220611667 is an apocalyptic number.

220611667 is a deficient number, since it is larger than the sum of its proper divisors (1).

220611667 is an equidigital number, since it uses as much as digits as its factorization.

220611667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 220611667 is about 14853.0019524674. The cubic root of 220611667 is about 604.2400283890.

Adding to 220611667 its reverse (766116022), we get a palindrome (986727689).

The spelling of 220611667 in words is "two hundred twenty million, six hundred eleven thousand, six hundred sixty-seven".