79765 has 16 divisors (see below), whose sum is σ = 114048. Its totient is φ = 52416.

The previous prime is 79757. The next prime is 79769. The reversal of 79765 is 56797.

79765 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 79765 - 2³ = 79757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1479 + ... + 1531.

It is an arithmetic number, because the mean of its divisors is an integer number (7128).

2⁷⁹⁷⁶⁵ is an apocalyptic number.

It is an amenable number.

79765 is a deficient number, since it is larger than the sum of its proper divisors (34283).

79765 is a wasteful number, since it uses less digits than its factorization.

79765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108.

The product of its digits is 13230, while the sum is 34.

The square root of 79765 is about 282.4269817139. The cubic root of 79765 is about 43.0464614084.

The spelling of 79765 in words is "seventy-nine thousand, seven hundred sixty-five".