606745 has 4 divisors (see below), whose sum is σ = 728100. Its totient is φ = 485392.

The previous prime is 606743. The next prime is 606757. The reversal of 606745 is 547606.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547606 = 2 ⋅273803.

It can be written as a sum of positive squares in 2 ways, for example, as 149769 + 456976 = 387^2 + 676^2 .

It is a cyclic number.

It is not a de Polignac number, because 606745 - 2¹ = 606743 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (606743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60670 + ... + 60679.

It is an arithmetic number, because the mean of its divisors is an integer number (182025).

2⁶⁰⁶⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

606745 is a deficient number, since it is larger than the sum of its proper divisors (121355).

606745 is a wasteful number, since it uses less digits than its factorization.

606745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121354.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 606745 is about 778.9383801046. The cubic root of 606745 is about 84.6581425137.

The spelling of 606745 in words is "six hundred six thousand, seven hundred forty-five".