606491 has 4 divisors (see below), whose sum is σ = 610512. Its totient is φ = 602472.

The previous prime is 606449. The next prime is 606493. The reversal of 606491 is 194606.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194606 = 2 ⋅97303.

It is a cyclic number.

It is not a de Polignac number, because 606491 - 2¹⁸ = 344347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 606491.

It is not an unprimeable number, because it can be changed into a prime (606493) 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, 1775 + ... + 2088.

It is an arithmetic number, because the mean of its divisors is an integer number (152628).

2⁶⁰⁶⁴⁹¹ is an apocalyptic number.

606491 is a deficient number, since it is larger than the sum of its proper divisors (4021).

606491 is a wasteful number, since it uses less digits than its factorization.

606491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 606491 is about 778.7753206156. The cubic root of 606491 is about 84.6463274626.

The spelling of 606491 in words is "six hundred six thousand, four hundred ninety-one".