1983556 has 12 divisors (see below), whose sum is σ = 3519292. Its totient is φ = 978048.

The previous prime is 1983523. The next prime is 1983559. The reversal of 1983556 is 6553891.

It can be written as a sum of positive squares in 2 ways, for example, as 614656 + 1368900 = 784^2 + 1170^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1983559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3105 + ... + 3688.

2^1983556 is an apocalyptic number.

It is an amenable number.

1983556 is a deficient number, since it is larger than the sum of its proper divisors (1535736).

1983556 is a wasteful number, since it uses less digits than its factorization.

1983556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6870 (or 6868 counting only the distinct ones).

The product of its digits is 32400, while the sum is 37.

The square root of 1983556 is about 1408.3877307049. The cubic root of 1983556 is about 125.6458519218.

It can be divided in two parts, 19835 and 56, that added together give a palindrome (19891).

The spelling of 1983556 in words is "one million, nine hundred eighty-three thousand, five hundred fifty-six".