197803 has 2 divisors, whose sum is σ = 197804. Its totient is φ = 197802.

The previous prime is 197779. The next prime is 197807. The reversal of 197803 is 308791.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197803 is a prime.

197803 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (197807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98901 + 98902.

It is an arithmetic number, because the mean of its divisors is an integer number (98902).

2¹⁹⁷⁸⁰³ is an apocalyptic number.

197803 is a deficient number, since it is larger than the sum of its proper divisors (1).

197803 is an equidigital number, since it uses as much as digits as its factorization.

197803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 197803 is about 444.7504918491. The cubic root of 197803 is about 58.2654302850.

It can be divided in two parts, 19780 and 3, that multiplied together give a triangular number (59340 = T₃₄₄).

The spelling of 197803 in words is "one hundred ninety-seven thousand, eight hundred three".