220266643 has 2 divisors, whose sum is σ = 220266644. Its totient is φ = 220266642.

The previous prime is 220266617. The next prime is 220266659. The reversal of 220266643 is 346662022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220266643 is a prime.

It is not a weakly prime, because it can be changed into another prime (220266043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110133321 + 110133322.

It is an arithmetic number, because the mean of its divisors is an integer number (110133322).

Almost surely, 2^220266643 is an apocalyptic number.

220266643 is a deficient number, since it is larger than the sum of its proper divisors (1).

220266643 is an equidigital number, since it uses as much as digits as its factorization.

220266643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 220266643 is about 14841.3827859806. The cubic root of 220266643 is about 603.9248651112.

The spelling of 220266643 in words is "two hundred twenty million, two hundred sixty-six thousand, six hundred forty-three".