220006669 has 2 divisors, whose sum is σ = 220006670. Its totient is φ = 220006668.

The previous prime is 220006651. The next prime is 220006679. The reversal of 220006669 is 966600022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147331044 + 72675625 = 12138^2 + 8525^2 .

It is a cyclic number.

It is not a de Polignac number, because 220006669 - 2⁷ = 220006541 is a prime.

It is a super-2 number, since 2×220006669² = 96805868808951122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220006669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220006609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110003334 + 110003335.

It is an arithmetic number, because the mean of its divisors is an integer number (110003335).

Almost surely, 2^220006669 is an apocalyptic number.

It is an amenable number.

220006669 is a deficient number, since it is larger than the sum of its proper divisors (1).

220006669 is an equidigital number, since it uses as much as digits as its factorization.

220006669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 220006669 is about 14832.6217844318. The cubic root of 220006669 is about 603.6871735410.

The spelling of 220006669 in words is "two hundred twenty million, six thousand, six hundred sixty-nine".