6994981617 has 16 divisors (see below), whose sum is σ = 10057819968. Its totient is φ = 4298713920.

The previous prime is 6994981607. The next prime is 6994981633. The reversal of 6994981617 is 7161894996.

It is a happy number.

6994981617 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6994981617 - 2⁴ = 6994981601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6994981607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93759 + ... + 150932.

It is an arithmetic number, because the mean of its divisors is an integer number (628613748).

Almost surely, 2^6994981617 is an apocalyptic number.

It is an amenable number.

6994981617 is a deficient number, since it is larger than the sum of its proper divisors (3062838351).

6994981617 is a wasteful number, since it uses less digits than its factorization.

6994981617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245440.

The product of its digits is 5878656, while the sum is 60.

The square root of 6994981617 is about 83636.0067016593. The cubic root of 6994981617 is about 1912.4739391382.

The spelling of 6994981617 in words is "six billion, nine hundred ninety-four million, nine hundred eighty-one thousand, six hundred seventeen".