663039 has 16 divisors (see below), whose sum is σ = 1058400. Its totient is φ = 407808.

The previous prime is 663037. The next prime is 663049. The reversal of 663039 is 930366.

663039 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 663039 - 2¹ = 663037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

663039 is strictly pandigital in base 7.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 594 + ... + 1295.

It is an arithmetic number, because the mean of its divisors is an integer number (66150).

2⁶⁶³⁰³⁹ is an apocalyptic number.

663039 is a deficient number, since it is larger than the sum of its proper divisors (395361).

663039 is a wasteful number, since it uses less digits than its factorization.

663039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911 (or 1905 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 663039 is about 814.2720675548. The cubic root of 663039 is about 87.1993052578.

The spelling of 663039 in words is "six hundred sixty-three thousand, thirty-nine".