603901 has 2 divisors, whose sum is σ = 603902. Its totient is φ = 603900.

The previous prime is 603899. The next prime is 603907. The reversal of 603901 is 109306.

603901 = 549² + 550².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302500 + 301401 = 550^2 + 549^2 .

It is a cyclic number.

It is not a de Polignac number, because 603901 - 2¹ = 603899 is a prime.

Together with 603899, it forms a pair of twin primes.

603901 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (603907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 301950 + 301951.

It is an arithmetic number, because the mean of its divisors is an integer number (301951).

2⁶⁰³⁹⁰¹ is an apocalyptic number.

603901 is the 550-th centered square number.

It is an amenable number.

603901 is a deficient number, since it is larger than the sum of its proper divisors (1).

603901 is an equidigital number, since it uses as much as digits as its factorization.

603901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 603901 is about 777.1106742286. The cubic root of 603901 is about 84.5256624086.

The spelling of 603901 in words is "six hundred three thousand, nine hundred one".