606845639 has 4 divisors (see below), whose sum is σ = 633230256. Its totient is φ = 580461024.

The previous prime is 606845609. The next prime is 606845647. The reversal of 606845639 is 936548606.

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

It is a cyclic number.

It is not a de Polignac number, because 606845639 - 2¹⁶ = 606780103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 606845593 and 606845602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (606845609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13192274 + ... + 13192319.

It is an arithmetic number, because the mean of its divisors is an integer number (158307564).

Almost surely, 2^606845639 is an apocalyptic number.

606845639 is a deficient number, since it is larger than the sum of its proper divisors (26384617).

606845639 is a wasteful number, since it uses less digits than its factorization.

606845639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26384616.

The product of its (nonzero) digits is 933120, while the sum is 47.

The square root of 606845639 is about 24634.2371304654. The cubic root of 606845639 is about 846.6282292020.

The spelling of 606845639 in words is "six hundred six million, eight hundred forty-five thousand, six hundred thirty-nine".