1983623 has 4 divisors (see below), whose sum is σ = 1998240. Its totient is φ = 1969008.

The previous prime is 1983601. The next prime is 1983643. The reversal of 1983623 is 3263891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3263891 = 277 ⋅11783.

It is a cyclic number.

It is not a de Polignac number, because 1983623 - 2⁶ = 1983559 is a prime.

It is a super-2 number, since 2×1983623² = 7869520412258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1983623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1983643) 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, 7103 + ... + 7376.

It is an arithmetic number, because the mean of its divisors is an integer number (499560).

2^1983623 is an apocalyptic number.

1983623 is a deficient number, since it is larger than the sum of its proper divisors (14617).

1983623 is a wasteful number, since it uses less digits than its factorization.

1983623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14616.

The product of its digits is 7776, while the sum is 32.

The square root of 1983623 is about 1408.4115165675. The cubic root of 1983623 is about 125.6472665827.

The spelling of 1983623 in words is "one million, nine hundred eighty-three thousand, six hundred twenty-three".