6981898705 has 8 divisors (see below), whose sum is σ = 8604718632. Its totient is φ = 5434558848.

The previous prime is 6981898673. The next prime is 6981898711. The reversal of 6981898705 is 5078981896.

It can be written as a sum of positive squares in 4 ways, for example, as 2690600641 + 4291298064 = 51871^2 + 65508^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6981898705 - 2⁵ = 6981898673 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18869812 + ... + 18870181.

It is an arithmetic number, because the mean of its divisors is an integer number (1075589829).

Almost surely, 2^6981898705 is an apocalyptic number.

It is an amenable number.

6981898705 is a deficient number, since it is larger than the sum of its proper divisors (1622819927).

6981898705 is a wasteful number, since it uses less digits than its factorization.

6981898705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37740035.

The product of its (nonzero) digits is 8709120, while the sum is 61.

The square root of 6981898705 is about 83557.7567015774. The cubic root of 6981898705 is about 1911.2808769860.

The spelling of 6981898705 in words is "six billion, nine hundred eighty-one million, eight hundred ninety-eight thousand, seven hundred five".