1226560613 has 2 divisors, whose sum is σ = 1226560614. Its totient is φ = 1226560612.

The previous prime is 1226560547. The next prime is 1226560627. The reversal of 1226560613 is 3160656221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 654489889 + 572070724 = 25583^2 + 23918^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226560613 - 2¹² = 1226556517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1226560613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226560213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613280306 + 613280307.

It is an arithmetic number, because the mean of its divisors is an integer number (613280307).

Almost surely, 2^1226560613 is an apocalyptic number.

It is an amenable number.

1226560613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226560613 is an equidigital number, since it uses as much as digits as its factorization.

1226560613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1226560613 is about 35022.2873753272. The cubic root of 1226560613 is about 1070.4416649913.

The spelling of 1226560613 in words is "one billion, two hundred twenty-six million, five hundred sixty thousand, six hundred thirteen".