6985886647 has 8 divisors (see below), whose sum is σ = 7313851440. Its totient is φ = 6663726720.

The previous prime is 6985886641. The next prime is 6985886651. The reversal of 6985886647 is 7466885896.

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

It is not a de Polignac number, because 6985886647 - 2⁷ = 6985886519 is a prime.

It is a super-2 number, since 2×6985886647² = 97605224489465805218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6985886641) 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, 1448754 + ... + 1453567.

It is an arithmetic number, because the mean of its divisors is an integer number (914231430).

Almost surely, 2^6985886647 is an apocalyptic number.

6985886647 is a deficient number, since it is larger than the sum of its proper divisors (327964793).

6985886647 is a wasteful number, since it uses less digits than its factorization.

6985886647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902433.

The product of its digits is 139345920, while the sum is 67.

The square root of 6985886647 is about 83581.6166809425. The cubic root of 6985886647 is about 1911.6447047863.

The spelling of 6985886647 in words is "six billion, nine hundred eighty-five million, eight hundred eighty-six thousand, six hundred forty-seven".