6685477 has 2 divisors, whose sum is σ = 6685478. Its totient is φ = 6685476.

The previous prime is 6685447. The next prime is 6685487. The reversal of 6685477 is 7745866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5044516 + 1640961 = 2246^2 + 1281^2 .

It is a cyclic number.

It is not a de Polignac number, because 6685477 - 2¹¹ = 6683429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6685447) 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, 3342738 + 3342739.

It is an arithmetic number, because the mean of its divisors is an integer number (3342739).

Almost surely, 2^6685477 is an apocalyptic number.

It is an amenable number.

6685477 is a deficient number, since it is larger than the sum of its proper divisors (1).

6685477 is an equidigital number, since it uses as much as digits as its factorization.

6685477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 43.

The square root of 6685477 is about 2585.6289370287. The cubic root of 6685477 is about 188.3840515678.

The spelling of 6685477 in words is "six million, six hundred eighty-five thousand, four hundred seventy-seven".