606626 has 4 divisors (see below), whose sum is σ = 909942. Its totient is φ = 303312.

The previous prime is 606607. The next prime is 606643. The reversal of 606626 is 626606.

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

It can be written as a sum of positive squares in only one way, i.e., 403225 + 203401 = 635^2 + 451^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 606595 and 606604.

It is an unprimeable number.

606626 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 151655 + ... + 151658.

2⁶⁰⁶⁶²⁶ is an apocalyptic number.

606626 is a deficient number, since it is larger than the sum of its proper divisors (303316).

606626 is a wasteful number, since it uses less digits than its factorization.

606626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303315.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 606626 is about 778.8619903423. The cubic root of 606626 is about 84.6526075263.

The spelling of 606626 in words is "six hundred six thousand, six hundred twenty-six".