79645 has 8 divisors (see below), whose sum is σ = 101304. Its totient is φ = 59904.

The previous prime is 79633. The next prime is 79657. The reversal of 79645 is 54697.

It is an interprime number because it is at equal distance from previous prime (79633) and next prime (79657).

It can be written as a sum of positive squares in 4 ways, for example, as 2916 + 76729 = 54^2 + 277^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79645 - 2⁵ = 79613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384 + ... + 553.

It is an arithmetic number, because the mean of its divisors is an integer number (12663).

2⁷⁹⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

79645 is a deficient number, since it is larger than the sum of its proper divisors (21659).

79645 is a wasteful number, since it uses less digits than its factorization.

79645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959.

The product of its digits is 7560, while the sum is 31.

The square root of 79645 is about 282.2144574610. The cubic root of 79645 is about 43.0248639327.

It can be divided in two parts, 796 and 45, that added together give a square (841 = 29²).

The spelling of 79645 in words is "seventy-nine thousand, six hundred forty-five".