606731 has 2 divisors, whose sum is σ = 606732. Its totient is φ = 606730.

The previous prime is 606721. The next prime is 606733. The reversal of 606731 is 137606.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 606731 - 2¹⁰ = 605707 is a prime.

It is a super-2 number, since 2×606731² = 736245012722, which contains 22 as substring.

Together with 606733, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₄₉₆₀₄ and since 606731 and 49604 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 606697 and 606706.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 606731.

It is not a weakly prime, because it can be changed into another prime (606733) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303365 + 303366.

It is an arithmetic number, because the mean of its divisors is an integer number (303366).

2⁶⁰⁶⁷³¹ is an apocalyptic number.

606731 is a deficient number, since it is larger than the sum of its proper divisors (1).

606731 is an equidigital number, since it uses as much as digits as its factorization.

606731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 606731 is about 778.9293934626. The cubic root of 606731 is about 84.6574913763.

The spelling of 606731 in words is "six hundred six thousand, seven hundred thirty-one".