6627985 has 24 divisors (see below), whose sum is σ = 9968616. Its totient is φ = 4193280.

The previous prime is 6627949. The next prime is 6627989. The reversal of 6627985 is 5897266.

It can be written as a sum of positive squares in 4 ways, for example, as 28224 + 6599761 = 168^2 + 2569^2 .

It is not a de Polignac number, because 6627985 - 2⁷ = 6627857 is a prime.

6627985 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6627989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2145 + ... + 4225.

It is an arithmetic number, because the mean of its divisors is an integer number (415359).

Almost surely, 2^6627985 is an apocalyptic number.

6627985 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6627985 is a deficient number, since it is larger than the sum of its proper divisors (3340631).

6627985 is a wasteful number, since it uses less digits than its factorization.

6627985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113 (or 2106 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 6627985 is about 2574.4873276052. The cubic root of 6627985 is about 187.8424910555.

The spelling of 6627985 in words is "six million, six hundred twenty-seven thousand, nine hundred eighty-five".