614691689 has 2 divisors, whose sum is σ = 614691690. Its totient is φ = 614691688.

The previous prime is 614691673. The next prime is 614691713. The reversal of 614691689 is 986196416.

614691689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 571592464 + 43099225 = 23908^2 + 6565^2 .

It is a cyclic number.

It is not a de Polignac number, because 614691689 - 2⁴ = 614691673 is a prime.

It is not a weakly prime, because it can be changed into another prime (614691089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307345844 + 307345845.

It is an arithmetic number, because the mean of its divisors is an integer number (307345845).

Almost surely, 2^614691689 is an apocalyptic number.

It is an amenable number.

614691689 is a deficient number, since it is larger than the sum of its proper divisors (1).

614691689 is an equidigital number, since it uses as much as digits as its factorization.

614691689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 50.

The square root of 614691689 is about 24792.9766062891. The cubic root of 614691689 is about 850.2613678356.

The spelling of 614691689 in words is "six hundred fourteen million, six hundred ninety-one thousand, six hundred eighty-nine".