610775221 has 4 divisors (see below), whose sum is σ = 698028832. Its totient is φ = 523521612.

The previous prime is 610775213. The next prime is 610775239. The reversal of 610775221 is 122577016.

610775221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 610775221 - 2³ = 610775213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610775251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43626795 + ... + 43626808.

It is an arithmetic number, because the mean of its divisors is an integer number (174507208).

Almost surely, 2^610775221 is an apocalyptic number.

It is an amenable number.

610775221 is a deficient number, since it is larger than the sum of its proper divisors (87253611).

610775221 is an equidigital number, since it uses as much as digits as its factorization.

610775221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87253610.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 610775221 is about 24713.8669778730. The cubic root of 610775221 is about 848.4517240866.

The spelling of 610775221 in words is "six hundred ten million, seven hundred seventy-five thousand, two hundred twenty-one".