6685603 has 2 divisors, whose sum is σ = 6685604. Its totient is φ = 6685602.

The previous prime is 6685577. The next prime is 6685619. The reversal of 6685603 is 3065866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6685603 - 2¹⁷ = 6554531 is a prime.

It is an Ulam number.

6685603 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6685633) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3342801 + 3342802.

It is an arithmetic number, because the mean of its divisors is an integer number (3342802).

Almost surely, 2^6685603 is an apocalyptic number.

6685603 is a deficient number, since it is larger than the sum of its proper divisors (1).

6685603 is an equidigital number, since it uses as much as digits as its factorization.

6685603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 6685603 is about 2585.6533023590. The cubic root of 6685603 is about 188.3852350406.

The spelling of 6685603 in words is "six million, six hundred eighty-five thousand, six hundred three".