613880689 has 2 divisors, whose sum is σ = 613880690. Its totient is φ = 613880688.

The previous prime is 613880681. The next prime is 613880719. The reversal of 613880689 is 986088316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 482549089 + 131331600 = 21967^2 + 11460^2 .

It is a cyclic number.

It is not a de Polignac number, because 613880689 - 2³ = 613880681 is a prime.

It is a super-2 number, since 2×613880689² = 753699000654229442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (613880681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306940344 + 306940345.

It is an arithmetic number, because the mean of its divisors is an integer number (306940345).

Almost surely, 2^613880689 is an apocalyptic number.

It is an amenable number.

613880689 is a deficient number, since it is larger than the sum of its proper divisors (1).

613880689 is an equidigital number, since it uses as much as digits as its factorization.

613880689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 613880689 is about 24776.6157697132. The cubic root of 613880689 is about 849.8872694789.

The spelling of 613880689 in words is "six hundred thirteen million, eight hundred eighty thousand, six hundred eighty-nine".