613725559 has 2 divisors, whose sum is σ = 613725560. Its totient is φ = 613725558.

The previous prime is 613725547. The next prime is 613725617. The reversal of 613725559 is 955527316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 613725559 - 2¹⁵ = 613692791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613725059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306862779 + 306862780.

It is an arithmetic number, because the mean of its divisors is an integer number (306862780).

Almost surely, 2^613725559 is an apocalyptic number.

613725559 is a deficient number, since it is larger than the sum of its proper divisors (1).

613725559 is an equidigital number, since it uses as much as digits as its factorization.

613725559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 283500, while the sum is 43.

The square root of 613725559 is about 24773.4849990872. The cubic root of 613725559 is about 849.8156735256.

The spelling of 613725559 in words is "six hundred thirteen million, seven hundred twenty-five thousand, five hundred fifty-nine".