979613 has 4 divisors (see below), whose sum is σ = 1003548. Its totient is φ = 955680.

The previous prime is 979567. The next prime is 979651. The reversal of 979613 is 316979.

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

It can be written as a sum of positive squares in 2 ways, for example, as 458329 + 521284 = 677^2 + 722^2 .

It is a cyclic number.

It is not a de Polignac number, because 979613 - 2⁶ = 979549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11906 + ... + 11987.

It is an arithmetic number, because the mean of its divisors is an integer number (250887).

2⁹⁷⁹⁶¹³ is an apocalyptic number.

It is an amenable number.

979613 is a deficient number, since it is larger than the sum of its proper divisors (23935).

979613 is a wasteful number, since it uses less digits than its factorization.

979613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23934.

The product of its digits is 10206, while the sum is 35.

The square root of 979613 is about 989.7540098428. The cubic root of 979613 is about 99.3157621979.

The spelling of 979613 in words is "nine hundred seventy-nine thousand, six hundred thirteen".