6685577 has 2 divisors, whose sum is σ = 6685578. Its totient is φ = 6685576.

The previous prime is 6685543. The next prime is 6685603. The reversal of 6685577 is 7755866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4239481 + 2446096 = 2059^2 + 1564^2 .

It is a cyclic number.

It is not a de Polignac number, because 6685577 - 2¹² = 6681481 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6685507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3342788 + 3342789.

It is an arithmetic number, because the mean of its divisors is an integer number (3342789).

Almost surely, 2^6685577 is an apocalyptic number.

It is an amenable number.

6685577 is a deficient number, since it is larger than the sum of its proper divisors (1).

6685577 is an equidigital number, since it uses as much as digits as its factorization.

6685577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 44.

The square root of 6685577 is about 2585.6482746112. The cubic root of 6685577 is about 188.3849908331.

The spelling of 6685577 in words is "six million, six hundred eighty-five thousand, five hundred seventy-seven".