220986361 has 2 divisors, whose sum is σ = 220986362. Its totient is φ = 220986360.

The previous prime is 220986341. The next prime is 220986373. The reversal of 220986361 is 163689022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157879225 + 63107136 = 12565^2 + 7944^2 .

It is a cyclic number.

It is not a de Polignac number, because 220986361 - 2¹⁷ = 220855289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220986361.

It is not a weakly prime, because it can be changed into another prime (220986341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110493180 + 110493181.

It is an arithmetic number, because the mean of its divisors is an integer number (110493181).

Almost surely, 2^220986361 is an apocalyptic number.

It is an amenable number.

220986361 is a deficient number, since it is larger than the sum of its proper divisors (1).

220986361 is an equidigital number, since it uses as much as digits as its factorization.

220986361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 220986361 is about 14865.6100110288. The cubic root of 220986361 is about 604.5819218454.

The spelling of 220986361 in words is "two hundred twenty million, nine hundred eighty-six thousand, three hundred sixty-one".