605678869 has 2 divisors, whose sum is σ = 605678870. Its totient is φ = 605678868.

The previous prime is 605678867. The next prime is 605678939. The reversal of 605678869 is 968876506.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 603291844 + 2387025 = 24562^2 + 1545^2 .

It is a cyclic number.

It is not a de Polignac number, because 605678869 - 2¹ = 605678867 is a prime.

It is a super-2 number, since 2×605678869² = 733693784706238322, which contains 22 as substring.

Together with 605678867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (605678867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302839434 + 302839435.

It is an arithmetic number, because the mean of its divisors is an integer number (302839435).

Almost surely, 2^605678869 is an apocalyptic number.

It is an amenable number.

605678869 is a deficient number, since it is larger than the sum of its proper divisors (1).

605678869 is an equidigital number, since it uses as much as digits as its factorization.

605678869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The square root of 605678869 is about 24610.5438582734. The cubic root of 605678869 is about 846.0852826820.

The spelling of 605678869 in words is "six hundred five million, six hundred seventy-eight thousand, eight hundred sixty-nine".