220086961 has 2 divisors, whose sum is σ = 220086962. Its totient is φ = 220086960.

The previous prime is 220086929. The next prime is 220087009. The reversal of 220086961 is 169680022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156725361 + 63361600 = 12519^2 + 7960^2 .

It is a cyclic number.

It is not a de Polignac number, because 220086961 - 2⁵ = 220086929 is a prime.

It is not a weakly prime, because it can be changed into another prime (220086161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110043480 + 110043481.

It is an arithmetic number, because the mean of its divisors is an integer number (110043481).

Almost surely, 2^220086961 is an apocalyptic number.

It is an amenable number.

220086961 is a deficient number, since it is larger than the sum of its proper divisors (1).

220086961 is an equidigital number, since it uses as much as digits as its factorization.

220086961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 220086961 is about 14835.3281392762. The cubic root of 220086961 is about 603.7606036714.

The spelling of 220086961 in words is "two hundred twenty million, eighty-six thousand, nine hundred sixty-one".