6988417855 has 8 divisors (see below), whose sum is σ = 8409463200. Its totient is φ = 5575159776.

The previous prime is 6988417811. The next prime is 6988417859. The reversal of 6988417855 is 5587148896.

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 6988417855 - 2¹¹ = 6988415807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6988417793 and 6988417802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6988417859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1944840 + ... + 1948429.

It is an arithmetic number, because the mean of its divisors is an integer number (1051182900).

Almost surely, 2^6988417855 is an apocalyptic number.

6988417855 is a deficient number, since it is larger than the sum of its proper divisors (1421045345).

6988417855 is a wasteful number, since it uses less digits than its factorization.

6988417855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893633.

The product of its digits is 19353600, while the sum is 61.

The square root of 6988417855 is about 83596.7574430970. The cubic root of 6988417855 is about 1911.8755600482.

The spelling of 6988417855 in words is "six billion, nine hundred eighty-eight million, four hundred seventeen thousand, eight hundred fifty-five".