659980199 has 2 divisors, whose sum is σ = 659980200. Its totient is φ = 659980198.

The previous prime is 659980183. The next prime is 659980213. The reversal of 659980199 is 991089956.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 659980199 - 2⁴ = 659980183 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (659980129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329990099 + 329990100.

It is an arithmetic number, because the mean of its divisors is an integer number (329990100).

Almost surely, 2^659980199 is an apocalyptic number.

659980199 is a deficient number, since it is larger than the sum of its proper divisors (1).

659980199 is an equidigital number, since it uses as much as digits as its factorization.

659980199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1574640, while the sum is 56.

The square root of 659980199 is about 25690.0797779999. The cubic root of 659980199 is about 870.6500620029.

The spelling of 659980199 in words is "six hundred fifty-nine million, nine hundred eighty thousand, one hundred ninety-nine".