608686385 has 4 divisors (see below), whose sum is σ = 730423668. Its totient is φ = 486949104.

The previous prime is 608686373. The next prime is 608686387. The reversal of 608686385 is 583686806.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 317267344 + 291419041 = 17812^2 + 17071^2 .

It is a cyclic number.

It is not a de Polignac number, because 608686385 - 2¹⁰ = 608685361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (608686387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60868634 + ... + 60868643.

It is an arithmetic number, because the mean of its divisors is an integer number (182605917).

Almost surely, 2^608686385 is an apocalyptic number.

It is an amenable number.

608686385 is a deficient number, since it is larger than the sum of its proper divisors (121737283).

608686385 is a wasteful number, since it uses less digits than its factorization.

608686385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121737282.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The square root of 608686385 is about 24671.5703796901. The cubic root of 608686385 is about 847.4833914538.

The spelling of 608686385 in words is "six hundred eight million, six hundred eighty-six thousand, three hundred eighty-five".