619983 has 24 divisors (see below), whose sum is σ = 1103648. Its totient is φ = 326592.

The previous prime is 619981. The next prime is 619987. The reversal of 619983 is 389916.

It is not a de Polignac number, because 619983 - 2¹ = 619981 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

619983 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 441 + ... + 1197.

2⁶¹⁹⁹⁸³ is an apocalyptic number.

619983 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

619983 is a deficient number, since it is larger than the sum of its proper divisors (483665).

619983 is a wasteful number, since it uses less digits than its factorization.

619983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 780 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 619983 is about 787.3899923164. The cubic root of 619983 is about 85.2694104745.

It can be divided in two parts, 61998 and 3, that added together give a square (62001 = 249²).

The spelling of 619983 in words is "six hundred nineteen thousand, nine hundred eighty-three".