6991027 has 8 divisors (see below), whose sum is σ = 7336832. Its totient is φ = 6652800.

The previous prime is 6991013. The next prime is 6991043. The reversal of 6991027 is 7201996.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6991027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6990983 and 6991001.

It is not an unprimeable number, because it can be changed into a prime (6991427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43 + ... + 3739.

It is an arithmetic number, because the mean of its divisors is an integer number (917104).

Almost surely, 2^6991027 is an apocalyptic number.

6991027 is a deficient number, since it is larger than the sum of its proper divisors (345805).

6991027 is a wasteful number, since it uses less digits than its factorization.

6991027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 6991027 is about 2644.0550296845. The cubic root of 6991027 is about 191.2113465107.

The spelling of 6991027 in words is "six million, nine hundred ninety-one thousand, twenty-seven".