79578 has 12 divisors (see below), whose sum is σ = 172458. Its totient is φ = 26520.

The previous prime is 79561. The next prime is 79579. The reversal of 79578 is 87597.

79578 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in only one way, i.e., 56169 + 23409 = 237^2 + 153^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79579) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2193 + ... + 2228.

2⁷⁹⁵⁷⁸ is an apocalyptic number.

79578 is an abundant number, since it is smaller than the sum of its proper divisors (92880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79578 is a wasteful number, since it uses less digits than its factorization.

79578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4429 (or 4426 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 79578 is about 282.0957284327. The cubic root of 79578 is about 43.0127959034.

The spelling of 79578 in words is "seventy-nine thousand, five hundred seventy-eight".