6628698 has 36 divisors (see below), whose sum is σ = 14815710. Its totient is φ = 2141856.

The previous prime is 6628679. The next prime is 6628711. The reversal of 6628698 is 8968266.

It can be written as a sum of positive squares in 3 ways, for example, as 6365529 + 263169 = 2523^2 + 513^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24508 + ... + 24776.

Almost surely, 2^6628698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6628698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7407855).

6628698 is an abundant number, since it is smaller than the sum of its proper divisors (8187012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6628698 is a wasteful number, since it uses less digits than its factorization.

6628698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 311 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 6628698 is about 2574.6257980530. The cubic root of 6628698 is about 187.8492264808.

The spelling of 6628698 in words is "six million, six hundred twenty-eight thousand, six hundred ninety-eight".