6990038806 has 32 divisors (see below), whose sum is σ = 10964131200. Its totient is φ = 3339463680.

The previous prime is 6990038789. The next prime is 6990038807. The reversal of 6990038806 is 6088300996.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 6990038806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990038807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1067350 + ... + 1073878.

It is an arithmetic number, because the mean of its divisors is an integer number (342629100).

Almost surely, 2^6990038806 is an apocalyptic number.

6990038806 is a deficient number, since it is larger than the sum of its proper divisors (3974092394).

6990038806 is a wasteful number, since it uses less digits than its factorization.

6990038806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6844.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 6990038806 is about 83606.4519400267. The cubic root of 6990038806 is about 1912.0233673244.

The spelling of 6990038806 in words is "six billion, nine hundred ninety million, thirty-eight thousand, eight hundred six".