610869641 has 2 divisors, whose sum is σ = 610869642. Its totient is φ = 610869640.

The previous prime is 610869629. The next prime is 610869643. The reversal of 610869641 is 146968016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610831225 + 38416 = 24715^2 + 196^2 .

It is a cyclic number.

It is not a de Polignac number, because 610869641 - 2¹⁸ = 610607497 is a prime.

It is a Sophie Germain prime.

Together with 610869643, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (610869643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305434820 + 305434821.

It is an arithmetic number, because the mean of its divisors is an integer number (305434821).

Almost surely, 2^610869641 is an apocalyptic number.

It is an amenable number.

610869641 is a deficient number, since it is larger than the sum of its proper divisors (1).

610869641 is an equidigital number, since it uses as much as digits as its factorization.

610869641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 610869641 is about 24715.7771676312. Note that the first 3 decimals coincide. The cubic root of 610869641 is about 848.4954426710.

The spelling of 610869641 in words is "six hundred ten million, eight hundred sixty-nine thousand, six hundred forty-one".