609619 has 2 divisors, whose sum is σ = 609620. Its totient is φ = 609618.

The previous prime is 609617. The next prime is 609641. The reversal of 609619 is 916906.

609619 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 is a cyclic number.

It is not a de Polignac number, because 609619 - 2¹ = 609617 is a prime.

It is a super-2 number, since 2×609619² = 743270650322, which contains 22 as substring.

Together with 609617, it forms a pair of twin primes.

It is a Chen prime.

609619 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (609613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304809 + 304810.

It is an arithmetic number, because the mean of its divisors is an integer number (304810).

2⁶⁰⁹⁶¹⁹ is an apocalyptic number.

609619 is a deficient number, since it is larger than the sum of its proper divisors (1).

609619 is an equidigital number, since it uses as much as digits as its factorization.

609619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 609619 is about 780.7810192365. The cubic root of 609619 is about 84.7916001974.

The spelling of 609619 in words is "six hundred nine thousand, six hundred nineteen".