613887061 has 2 divisors, whose sum is σ = 613887062. Its totient is φ = 613887060.

The previous prime is 613887047. The next prime is 613887067. The reversal of 613887061 is 160788316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 613800625 + 86436 = 24775^2 + 294^2 .

It is a cyclic number.

It is not a de Polignac number, because 613887061 - 2⁹ = 613886549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613887067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306943530 + 306943531.

It is an arithmetic number, because the mean of its divisors is an integer number (306943531).

Almost surely, 2^613887061 is an apocalyptic number.

It is an amenable number.

613887061 is a deficient number, since it is larger than the sum of its proper divisors (1).

613887061 is an equidigital number, since it uses as much as digits as its factorization.

613887061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 613887061 is about 24776.7443583696. The cubic root of 613887061 is about 849.8902100411.

The spelling of 613887061 in words is "six hundred thirteen million, eight hundred eighty-seven thousand, sixty-one".