606691 has 4 divisors (see below), whose sum is σ = 618192. Its totient is φ = 595192.

The previous prime is 606673. The next prime is 606721. The reversal of 606691 is 196606.

It is a happy number.

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 606691 - 2⁵ = 606659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (606091) 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, 5671 + ... + 5776.

It is an arithmetic number, because the mean of its divisors is an integer number (154548).

2⁶⁰⁶⁶⁹¹ is an apocalyptic number.

606691 is a deficient number, since it is larger than the sum of its proper divisors (11501).

606691 is a wasteful number, since it uses less digits than its factorization.

606691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 606691 is about 778.9037167712. The cubic root of 606691 is about 84.6556309284.

The spelling of 606691 in words is "six hundred six thousand, six hundred ninety-one".