617983 has 2 divisors, whose sum is σ = 617984. Its totient is φ = 617982.

The previous prime is 617971. The next prime is 618029. The reversal of 617983 is 389716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 617983 - 2⁵ = 617951 is a prime.

It is a plaindrome in base 8.

It is a zygodrome in base 8.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (617963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308991 + 308992.

It is an arithmetic number, because the mean of its divisors is an integer number (308992).

2⁶¹⁷⁹⁸³ is an apocalyptic number.

617983 is a deficient number, since it is larger than the sum of its proper divisors (1).

617983 is an equidigital number, since it uses as much as digits as its factorization.

617983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 617983 is about 786.1189477426. The cubic root of 617983 is about 85.1776216510.

It can be divided in two parts, 617 and 983, that added together give a square (1600 = 40²).

The spelling of 617983 in words is "six hundred seventeen thousand, nine hundred eighty-three".