6898661 has 12 divisors (see below), whose sum is σ = 8755200. Its totient is φ = 5375160.

The previous prime is 6898637. The next prime is 6898663. The reversal of 6898661 is 1668986.

It is not a de Polignac number, because 6898661 - 2¹⁰ = 6897637 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6898663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5861 + ... + 6938.

It is an arithmetic number, because the mean of its divisors is an integer number (729600).

Almost surely, 2^6898661 is an apocalyptic number.

It is an amenable number.

6898661 is a deficient number, since it is larger than the sum of its proper divisors (1856539).

6898661 is a wasteful number, since it uses less digits than its factorization.

6898661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12824 (or 12817 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 6898661 is about 2626.5302206523. The cubic root of 6898661 is about 190.3655106214.

The spelling of 6898661 in words is "six million, eight hundred ninety-eight thousand, six hundred sixty-one".