220566427 has 2 divisors, whose sum is σ = 220566428. Its totient is φ = 220566426.

The previous prime is 220566397. The next prime is 220566473. The reversal of 220566427 is 724665022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220566427 - 2²⁷ = 86348699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220566392 and 220566401.

It is not a weakly prime, because it can be changed into another prime (220566727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110283213 + 110283214.

It is an arithmetic number, because the mean of its divisors is an integer number (110283214).

Almost surely, 2^220566427 is an apocalyptic number.

220566427 is a deficient number, since it is larger than the sum of its proper divisors (1).

220566427 is an equidigital number, since it uses as much as digits as its factorization.

220566427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 220566427 is about 14851.4789499228. The cubic root of 220566427 is about 604.1987224931.

The spelling of 220566427 in words is "two hundred twenty million, five hundred sixty-six thousand, four hundred twenty-seven".