1982668 has 6 divisors (see below), whose sum is σ = 3469676. Its totient is φ = 991332.

The previous prime is 1982641. The next prime is 1982671. The reversal of 1982668 is 8662891.

It is a self number, because there is not a number n which added to its sum of digits gives 1982668.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247830 + ... + 247837.

2^1982668 is an apocalyptic number.

It is an amenable number.

1982668 is a deficient number, since it is larger than the sum of its proper divisors (1487008).

1982668 is a wasteful number, since it uses less digits than its factorization.

1982668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495671 (or 495669 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 1982668 is about 1408.0724413183. The cubic root of 1982668 is about 125.6270993766.

The spelling of 1982668 in words is "one million, nine hundred eighty-two thousand, six hundred sixty-eight".