6985242991 has 8 divisors (see below), whose sum is σ = 7412492160. Its totient is φ = 6568289112.

The previous prime is 6985242983. The next prime is 6985242997. The reversal of 6985242991 is 1992425896.

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 6985242991 - 2³ = 6985242983 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 (6985242997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2572425 + ... + 2575138.

It is an arithmetic number, because the mean of its divisors is an integer number (926561520).

Almost surely, 2^6985242991 is an apocalyptic number.

6985242991 is a deficient number, since it is larger than the sum of its proper divisors (427249169).

6985242991 is a wasteful number, since it uses less digits than its factorization.

6985242991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5147645.

The product of its digits is 2799360, while the sum is 55.

The square root of 6985242991 is about 83577.7661283191. The cubic root of 6985242991 is about 1911.5859921543.

The spelling of 6985242991 in words is "six billion, nine hundred eighty-five million, two hundred forty-two thousand, nine hundred ninety-one".