220266247 has 2 divisors, whose sum is σ = 220266248. Its totient is φ = 220266246.

The previous prime is 220266209. The next prime is 220266257. The reversal of 220266247 is 742662022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220266247 - 2⁷ = 220266119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220266257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110133123 + 110133124.

It is an arithmetic number, because the mean of its divisors is an integer number (110133124).

Almost surely, 2^220266247 is an apocalyptic number.

220266247 is a deficient number, since it is larger than the sum of its proper divisors (1).

220266247 is an equidigital number, since it uses as much as digits as its factorization.

220266247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 220266247 is about 14841.3694448996. The cubic root of 220266247 is about 603.9245031947.

The spelling of 220266247 in words is "two hundred twenty million, two hundred sixty-six thousand, two hundred forty-seven".