79663 has 8 divisors (see below), whose sum is σ = 85680. Its totient is φ = 73920.

The previous prime is 79657. The next prime is 79669. The reversal of 79663 is 36697.

It is an interprime number because it is at equal distance from previous prime (79657) and next prime (79669).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79663 - 2⁵ = 79631 is a prime.

It is a Duffinian number.

79663 is a lucky number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79669) 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 in 7 ways as a sum of consecutive naturals, for example, 1156 + ... + 1222.

It is an arithmetic number, because the mean of its divisors is an integer number (10710).

2⁷⁹⁶⁶³ is an apocalyptic number.

79663 is a deficient number, since it is larger than the sum of its proper divisors (6017).

79663 is a wasteful number, since it uses less digits than its factorization.

79663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137.

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

The square root of 79663 is about 282.2463463005. The cubic root of 79663 is about 43.0281049364.

The spelling of 79663 in words is "seventy-nine thousand, six hundred sixty-three".