78579 has 6 divisors (see below), whose sum is σ = 113516. Its totient is φ = 52380.

The previous prime is 78577. The next prime is 78583. The reversal of 78579 is 97587.

It is not a de Polignac number, because 78579 - 2¹ = 78577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78571) 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, 4357 + ... + 4374.

2⁷⁸⁵⁷⁹ is an apocalyptic number.

78579 is a deficient number, since it is larger than the sum of its proper divisors (34937).

78579 is a wasteful number, since it uses less digits than its factorization.

78579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8737 (or 8734 counting only the distinct ones).

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

The square root of 78579 is about 280.3194606159. The cubic root of 78579 is about 42.8320472125.

The spelling of 78579 in words is "seventy-eight thousand, five hundred seventy-nine".