6898690 has 8 divisors (see below), whose sum is σ = 12417660. Its totient is φ = 2759472.

The previous prime is 6898667. The next prime is 6898739. The reversal of 6898690 is 968986.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6806881 + 91809 = 2609^2 + 303^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6898690² = 95183847432200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6898690.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344925 + ... + 344944.

Almost surely, 2^6898690 is an apocalyptic number.

6898690 is a deficient number, since it is larger than the sum of its proper divisors (5518970).

6898690 is a wasteful number, since it uses less digits than its factorization.

6898690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689876.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 6898690 is about 2626.5357412379. The cubic root of 6898690 is about 190.3657773685.

The spelling of 6898690 in words is "six million, eight hundred ninety-eight thousand, six hundred ninety".