610220209 has 2 divisors, whose sum is σ = 610220210. Its totient is φ = 610220208.

The previous prime is 610220189. The next prime is 610220257. The reversal of 610220209 is 902022016.

It is a happy number.

610220209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395890609 + 214329600 = 19897^2 + 14640^2 .

It is a cyclic number.

It is not a de Polignac number, because 610220209 - 2⁷ = 610220081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 610220209.

It is not a weakly prime, because it can be changed into another prime (610220269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305110104 + 305110105.

It is an arithmetic number, because the mean of its divisors is an integer number (305110105).

Almost surely, 2^610220209 is an apocalyptic number.

It is an amenable number.

610220209 is a deficient number, since it is larger than the sum of its proper divisors (1).

610220209 is an equidigital number, since it uses as much as digits as its factorization.

610220209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 610220209 is about 24702.6356690941. The cubic root of 610220209 is about 848.1946499181.

The spelling of 610220209 in words is "six hundred ten million, two hundred twenty thousand, two hundred nine".