979663 has 4 divisors (see below), whose sum is σ = 982368. Its totient is φ = 976960.

The previous prime is 979651. The next prime is 979691. The reversal of 979663 is 366979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366979 = 17 ⋅21587.

It is a cyclic number.

It is not a de Polignac number, because 979663 - 2¹⁷ = 848591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979063) 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, 706 + ... + 1567.

It is an arithmetic number, because the mean of its divisors is an integer number (245592).

2⁹⁷⁹⁶⁶³ is an apocalyptic number.

979663 is a deficient number, since it is larger than the sum of its proper divisors (2705).

979663 is a wasteful number, since it uses less digits than its factorization.

979663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704.

The product of its digits is 61236, while the sum is 40.

The square root of 979663 is about 989.7792683220. The cubic root of 979663 is about 99.3174518800.

It can be divided in two parts, 97966 and 3, that added together give a square (97969 = 313²).

The spelling of 979663 in words is "nine hundred seventy-nine thousand, six hundred sixty-three".