655546613 has 2 divisors, whose sum is σ = 655546614. Its totient is φ = 655546612.

The previous prime is 655546609. The next prime is 655546627. The reversal of 655546613 is 316645556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 458902084 + 196644529 = 21422^2 + 14023^2 .

It is a cyclic number.

It is not a de Polignac number, because 655546613 - 2² = 655546609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655546013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327773306 + 327773307.

It is an arithmetic number, because the mean of its divisors is an integer number (327773307).

Almost surely, 2^655546613 is an apocalyptic number.

It is an amenable number.

655546613 is a deficient number, since it is larger than the sum of its proper divisors (1).

655546613 is an equidigital number, since it uses as much as digits as its factorization.

655546613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324000, while the sum is 41.

The square root of 655546613 is about 25603.6445257311. The cubic root of 655546613 is about 868.6960750615.

The spelling of 655546613 in words is "six hundred fifty-five million, five hundred forty-six thousand, six hundred thirteen".