220747361 has 2 divisors, whose sum is σ = 220747362. Its totient is φ = 220747360.

The previous prime is 220747309. The next prime is 220747367. The reversal of 220747361 is 163747022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172528225 + 48219136 = 13135^2 + 6944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220747361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220747367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110373680 + 110373681.

It is an arithmetic number, because the mean of its divisors is an integer number (110373681).

Almost surely, 2^220747361 is an apocalyptic number.

It is an amenable number.

220747361 is a deficient number, since it is larger than the sum of its proper divisors (1).

220747361 is an equidigital number, since it uses as much as digits as its factorization.

220747361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 220747361 is about 14857.5691484172. The cubic root of 220747361 is about 604.3638884773.

The spelling of 220747361 in words is "two hundred twenty million, seven hundred forty-seven thousand, three hundred sixty-one".