6993994999 has 8 divisors (see below), whose sum is σ = 7018161552. Its totient is φ = 6969869760.

The previous prime is 6993994991. The next prime is 6993995003. The reversal of 6993994999 is 9994993996.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6993994999 - 2³ = 6993994991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6993994991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350187 + ... + 369619.

It is an arithmetic number, because the mean of its divisors is an integer number (877270194).

Almost surely, 2^6993994999 is an apocalyptic number.

6993994999 is a deficient number, since it is larger than the sum of its proper divisors (24166553).

6993994999 is a wasteful number, since it uses less digits than its factorization.

6993994999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20657.

The product of its digits is 344373768, while the sum is 76.

The square root of 6993994999 is about 83630.1082087067. The cubic root of 6993994999 is about 1912.3840189623.

The spelling of 6993994999 in words is "six billion, nine hundred ninety-three million, nine hundred ninety-four thousand, nine hundred ninety-nine".