606686869 has 4 divisors (see below), whose sum is σ = 606909996. Its totient is φ = 606463744.

The previous prime is 606686851. The next prime is 606686879. The reversal of 606686869 is 968686606.

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 533379025 + 73307844 = 23095^2 + 8562^2 .

It is a cyclic number.

It is not a de Polignac number, because 606686869 - 2¹⁵ = 606654101 is a prime.

It is a super-2 number, since 2×606686869² = 736137914034046322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (606686849) 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, 107434 + ... + 112939.

It is an arithmetic number, because the mean of its divisors is an integer number (151727499).

Almost surely, 2^606686869 is an apocalyptic number.

It is an amenable number.

606686869 is a deficient number, since it is larger than the sum of its proper divisors (223127).

606686869 is a wasteful number, since it uses less digits than its factorization.

606686869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223126.

The product of its (nonzero) digits is 4478976, while the sum is 55.

The square root of 606686869 is about 24631.0143721285. The cubic root of 606686869 is about 846.5543878604.

It can be divided in two parts, 606 and 686869, that multiplied together give a palindrome (416242614).

The spelling of 606686869 in words is "six hundred six million, six hundred eighty-six thousand, eight hundred sixty-nine".