79505 has 4 divisors (see below), whose sum is σ = 95412. Its totient is φ = 63600.

The previous prime is 79493. The next prime is 79531. The reversal of 79505 is 50597.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50597 = 19 ⋅2663.

It can be written as a sum of positive squares in 2 ways, for example, as 61009 + 18496 = 247^2 + 136^2 .

It is a de Polignac number, because none of the positive numbers 2^k-79505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7946 + ... + 7955.

It is an arithmetic number, because the mean of its divisors is an integer number (23853).

2⁷⁹⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

79505 is a deficient number, since it is larger than the sum of its proper divisors (15907).

79505 is a wasteful number, since it uses less digits than its factorization.

79505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15906.

The product of its (nonzero) digits is 1575, while the sum is 26.

The square root of 79505 is about 281.9663100443. The cubic root of 79505 is about 42.9996394417. Note that the first 3 decimals are identical.

The spelling of 79505 in words is "seventy-nine thousand, five hundred five".