6990220998 has 64 divisors (see below), whose sum is σ = 15960672000. Its totient is φ = 2266866432.

The previous prime is 6990220957. The next prime is 6990221003. The reversal of 6990220998 is 8990220996.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297733 + ... + 320351.

It is an arithmetic number, because the mean of its divisors is an integer number (249385500).

Almost surely, 2^6990220998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6990220998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7980336000).

6990220998 is an abundant number, since it is smaller than the sum of its proper divisors (8970451002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6990220998 is a wasteful number, since it uses less digits than its factorization.

6990220998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22786 (or 22780 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 6990220998 is about 83607.5415139089. The cubic root of 6990220998 is about 1912.0399791699.

The spelling of 6990220998 in words is "six billion, nine hundred ninety million, two hundred twenty thousand, nine hundred ninety-eight".