6990220 has 24 divisors (see below), whose sum is σ = 14768208. Its totient is φ = 2779200.

The previous prime is 6990199. The next prime is 6990227. The reversal of 6990220 is 220996.

It is not an unprimeable number, because it can be changed into a prime (6990227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2655 + ... + 4585.

It is an arithmetic number, because the mean of its divisors is an integer number (615342).

Almost surely, 2^6990220 is an apocalyptic number.

It is an amenable number.

6990220 is an abundant number, since it is smaller than the sum of its proper divisors (7777988).

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

6990220 is a wasteful number, since it uses less digits than its factorization.

6990220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121 (or 2119 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 6990220 is about 2643.9024187742. The cubic root of 6990220 is about 191.2039888175.

The spelling of 6990220 in words is "six million, nine hundred ninety thousand, two hundred twenty".