655612619 has 2 divisors, whose sum is σ = 655612620. Its totient is φ = 655612618.

The previous prime is 655612577. The next prime is 655612649. The reversal of 655612619 is 916216556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655612619 - 2²⁸ = 387177163 is a prime.

It is a super-3 number, since 3×655612619³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (655612649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327806309 + 327806310.

It is an arithmetic number, because the mean of its divisors is an integer number (327806310).

Almost surely, 2^655612619 is an apocalyptic number.

655612619 is a deficient number, since it is larger than the sum of its proper divisors (1).

655612619 is an equidigital number, since it uses as much as digits as its factorization.

655612619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 41.

The square root of 655612619 is about 25604.9334894664. The cubic root of 655612619 is about 868.7252299823.

The spelling of 655612619 in words is "six hundred fifty-five million, six hundred twelve thousand, six hundred nineteen".