606706640 has 20 divisors (see below), whose sum is σ = 1410593124. Its totient is φ = 242682624.

The previous prime is 606706621. The next prime is 606706699. The reversal of 606706640 is 46607606.

It can be written as a sum of positive squares in 2 ways, for example, as 112444816 + 494261824 = 10604^2 + 22232^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 606706640.

It is a congruent number.

It is an unprimeable number.

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, 3791837 + ... + 3791996.

Almost surely, 2^606706640 is an apocalyptic number.

It is an amenable number.

606706640 is an abundant number, since it is smaller than the sum of its proper divisors (803886484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

606706640 is a wasteful number, since it uses less digits than its factorization.

606706640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7583846 (or 7583840 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 606706640 is about 24631.4157124596. The cubic root of 606706640 is about 846.5635837328.

The spelling of 606706640 in words is "six hundred six million, seven hundred six thousand, six hundred forty".