663079 has 4 divisors (see below), whose sum is σ = 669384. Its totient is φ = 656776.

The previous prime is 663071. The next prime is 663097. The reversal of 663079 is 970366.

663079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 663079 - 2³ = 663071 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 663079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2992 + ... + 3205.

It is an arithmetic number, because the mean of its divisors is an integer number (167346).

2⁶⁶³⁰⁷⁹ is an apocalyptic number.

663079 is a deficient number, since it is larger than the sum of its proper divisors (6305).

663079 is a wasteful number, since it uses less digits than its factorization.

663079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6304.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 663079 is about 814.2966289995. The cubic root of 663079 is about 87.2010587504.

The spelling of 663079 in words is "six hundred sixty-three thousand, seventy-nine".