655602613 has 2 divisors, whose sum is σ = 655602614. Its totient is φ = 655602612.

The previous prime is 655602583. The next prime is 655602643. The reversal of 655602613 is 316206556.

It is a balanced prime because it is at equal distance from previous prime (655602583) and next prime (655602643).

It can be written as a sum of positive squares in only one way, i.e., 540190564 + 115412049 = 23242^2 + 10743^2 .

It is a cyclic number.

It is not a de Polignac number, because 655602613 - 2¹³ = 655594421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655602643) 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, 327801306 + 327801307.

It is an arithmetic number, because the mean of its divisors is an integer number (327801307).

Almost surely, 2^655602613 is an apocalyptic number.

It is an amenable number.

655602613 is a deficient number, since it is larger than the sum of its proper divisors (1).

655602613 is an equidigital number, since it uses as much as digits as its factorization.

655602613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 655602613 is about 25604.7380966883. The cubic root of 655602613 is about 868.7208104472.

The spelling of 655602613 in words is "six hundred fifty-five million, six hundred two thousand, six hundred thirteen".