6998612216 has 16 divisors (see below), whose sum is σ = 13135982640. Its totient is φ = 3495683520.

The previous prime is 6998612147. The next prime is 6998612239. The reversal of 6998612216 is 6122168996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444605 + ... + 460076.

It is an arithmetic number, because the mean of its divisors is an integer number (820998915).

Almost surely, 2^6998612216 is an apocalyptic number.

It is an amenable number.

6998612216 is a deficient number, since it is larger than the sum of its proper divisors (6137370424).

6998612216 is a wasteful number, since it uses less digits than its factorization.

6998612216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905654 (or 905650 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The square root of 6998612216 is about 83657.7086466035. The cubic root of 6998612216 is about 1912.8047584512.

The spelling of 6998612216 in words is "six billion, nine hundred ninety-eight million, six hundred twelve thousand, two hundred sixteen".