6651982 has 4 divisors (see below), whose sum is σ = 9977976. Its totient is φ = 3325990.

The previous prime is 6651959. The next prime is 6652001. The reversal of 6651982 is 2891566.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1662994 + ... + 1662997.

It is an arithmetic number, because the mean of its divisors is an integer number (2494494).

Almost surely, 2^6651982 is an apocalyptic number.

6651982 is a deficient number, since it is larger than the sum of its proper divisors (3325994).

6651982 is a wasteful number, since it uses less digits than its factorization.

6651982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325993.

The product of its digits is 25920, while the sum is 37.

The square root of 6651982 is about 2579.1436563325. The cubic root of 6651982 is about 188.0689161856.

The spelling of 6651982 in words is "six million, six hundred fifty-one thousand, nine hundred eighty-two".