663149 has 2 divisors, whose sum is σ = 663150. Its totient is φ = 663148.

The previous prime is 663127. The next prime is 663161. The reversal of 663149 is 941366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 465124 + 198025 = 682^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 663149 - 2¹⁶ = 597613 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331574 + 331575.

It is an arithmetic number, because the mean of its divisors is an integer number (331575).

2⁶⁶³¹⁴⁹ is an apocalyptic number.

It is an amenable number.

663149 is a deficient number, since it is larger than the sum of its proper divisors (1).

663149 is an equidigital number, since it uses as much as digits as its factorization.

663149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 663149 is about 814.3396097452. The cubic root of 663149 is about 87.2041271929.

The spelling of 663149 in words is "six hundred sixty-three thousand, one hundred forty-nine".