979647 has 4 divisors (see below), whose sum is σ = 1306200. Its totient is φ = 653096.

The previous prime is 979567. The next prime is 979651. The reversal of 979647 is 746979.

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 979647 - 2⁷ = 979519 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 979599 and 979608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979747) 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, 163272 + ... + 163277.

It is an arithmetic number, because the mean of its divisors is an integer number (326550).

2⁹⁷⁹⁶⁴⁷ is an apocalyptic number.

979647 is a deficient number, since it is larger than the sum of its proper divisors (326553).

979647 is a wasteful number, since it uses less digits than its factorization.

979647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326552.

The product of its digits is 95256, while the sum is 42.

The square root of 979647 is about 989.7711856788. The cubic root of 979647 is about 99.3169111880.

The spelling of 979647 in words is "nine hundred seventy-nine thousand, six hundred forty-seven".