6685887 has 16 divisors (see below), whose sum is σ = 9652608. Its totient is φ = 4092000.

The previous prime is 6685867. The next prime is 6685907. The reversal of 6685887 is 7885866.

It is a happy number.

6685887 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6685867) and next prime (6685907).

It is not a de Polignac number, because 6685887 - 2⁶ = 6685823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9448 + ... + 10130.

It is an arithmetic number, because the mean of its divisors is an integer number (603288).

Almost surely, 2^6685887 is an apocalyptic number.

6685887 is a deficient number, since it is larger than the sum of its proper divisors (2966721).

6685887 is a wasteful number, since it uses less digits than its factorization.

6685887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950.

The product of its digits is 645120, while the sum is 48.

The square root of 6685887 is about 2585.7082201981. The cubic root of 6685887 is about 188.3879024963.

It can be divided in two parts, 668 and 5887, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 6685887 in words is "six million, six hundred eighty-five thousand, eight hundred eighty-seven".