659983 has 2 divisors, whose sum is σ = 659984. Its totient is φ = 659982.

The previous prime is 659963. The next prime is 659999. The reversal of 659983 is 389956.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 659983 - 2⁵ = 659951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (659963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329991 + 329992.

It is an arithmetic number, because the mean of its divisors is an integer number (329992).

2⁶⁵⁹⁹⁸³ is an apocalyptic number.

659983 is a deficient number, since it is larger than the sum of its proper divisors (1).

659983 is an equidigital number, since it uses as much as digits as its factorization.

659983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 40.

The square root of 659983 is about 812.3933776195. The cubic root of 659983 is about 87.0651293700.

The spelling of 659983 in words is "six hundred fifty-nine thousand, nine hundred eighty-three".