663293 has 4 divisors (see below), whose sum is σ = 669600. Its totient is φ = 656988.

The previous prime is 663283. The next prime is 663301. The reversal of 663293 is 392366.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 663293 - 2⁸ = 663037 is a prime.

It is a d-powerful number, because it can be written as 6 + 6² + 2¹⁷ + 3⁶ + 9 + 3¹² .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663203) 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 in 3 ways as a sum of consecutive naturals, for example, 2993 + ... + 3206.

It is an arithmetic number, because the mean of its divisors is an integer number (167400).

2⁶⁶³²⁹³ is an apocalyptic number.

It is an amenable number.

663293 is a deficient number, since it is larger than the sum of its proper divisors (6307).

663293 is a wasteful number, since it uses less digits than its factorization.

663293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6306.

The product of its digits is 5832, while the sum is 29.

The square root of 663293 is about 814.4280201467. The cubic root of 663293 is about 87.2104387385.

The spelling of 663293 in words is "six hundred sixty-three thousand, two hundred ninety-three".