618983 has 4 divisors (see below), whose sum is σ = 620568. Its totient is φ = 617400.

The previous prime is 618979. The next prime is 618991. The reversal of 618983 is 389816.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 618983 - 2² = 618979 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618913) 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, 260 + ... + 1142.

It is an arithmetic number, because the mean of its divisors is an integer number (155142).

2⁶¹⁸⁹⁸³ is an apocalyptic number.

618983 is a deficient number, since it is larger than the sum of its proper divisors (1585).

618983 is an equidigital number, since it uses as much as digits as its factorization.

618983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584.

The product of its digits is 10368, while the sum is 35.

The square root of 618983 is about 786.7547267097. The cubic root of 618983 is about 85.2235407777.

The spelling of 618983 in words is "six hundred eighteen thousand, nine hundred eighty-three".