6990510213 has 18 divisors (see below), whose sum is σ = 10119269394. Its totient is φ = 4650269184.

The previous prime is 6990510181. The next prime is 6990510239. The reversal of 6990510213 is 3120150996.

It can be written as a sum of positive squares in 3 ways, for example, as 5041994049 + 1948516164 = 71007^2 + 44142^2 .

It is not a de Polignac number, because 6990510213 - 2⁵ = 6990510181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990510613) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2995195 + ... + 2997527.

It is an arithmetic number, because the mean of its divisors is an integer number (562181633).

Almost surely, 2^6990510213 is an apocalyptic number.

It is an amenable number.

6990510213 is a deficient number, since it is larger than the sum of its proper divisors (3128759181).

6990510213 is an equidigital number, since it uses as much as digits as its factorization.

6990510213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3493 (or 2913 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 6990510213 is about 83609.2710947775. The cubic root of 6990510213 is about 1912.0663485325.

The spelling of 6990510213 in words is "six billion, nine hundred ninety million, five hundred ten thousand, two hundred thirteen".