79605 has 24 divisors (see below), whose sum is σ = 145080. Its totient is φ = 40320.

The previous prime is 79601. The next prime is 79609. The reversal of 79605 is 50697.

It is an interprime number because it is at equal distance from previous prime (79601) and next prime (79609).

It can be written as a sum of positive squares in 4 ways, for example, as 81 + 79524 = 9^2 + 282^2 .

It is not a de Polignac number, because 79605 - 2² = 79601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79601) 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 23 ways as a sum of consecutive naturals, for example, 1275 + ... + 1335.

It is an arithmetic number, because the mean of its divisors is an integer number (6045).

2⁷⁹⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

79605 is a deficient number, since it is larger than the sum of its proper divisors (65475).

79605 is a wasteful number, since it uses less digits than its factorization.

79605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 79605 is about 282.1435804692. The cubic root of 79605 is about 43.0176599536.

The spelling of 79605 in words is "seventy-nine thousand, six hundred five".