6990020208 has 60 divisors (see below), whose sum is σ = 19764061408. Its totient is φ = 2305981440.

The previous prime is 6990020201. The next prime is 6990020227. The reversal of 6990020208 is 8020200996.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990020201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236248 + ... + 264183.

Almost surely, 2^6990020208 is an apocalyptic number.

It is an amenable number.

6990020208 is an abundant number, since it is smaller than the sum of its proper divisors (12774041200).

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

6990020208 is a wasteful number, since it uses less digits than its factorization.

6990020208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500542 (or 500533 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 6990020208 is about 83606.3407164792. The cubic root of 6990020208 is about 1912.0216715855.

The spelling of 6990020208 in words is "six billion, nine hundred ninety million, twenty thousand, two hundred eight".