6991982 has 8 divisors (see below), whose sum is σ = 10506216. Its totient is φ = 3489912.

The previous prime is 6991979. The next prime is 6991991. The reversal of 6991982 is 2891996.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1433 + ... + 4004.

It is an arithmetic number, because the mean of its divisors is an integer number (1313277).

Almost surely, 2^6991982 is an apocalyptic number.

6991982 is a deficient number, since it is larger than the sum of its proper divisors (3514234).

6991982 is a wasteful number, since it uses less digits than its factorization.

6991982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6082.

The product of its digits is 69984, while the sum is 44.

The square root of 6991982 is about 2644.2356173382. The cubic root of 6991982 is about 191.2200528387.

The spelling of 6991982 in words is "six million, nine hundred ninety-one thousand, nine hundred eighty-two".