278579 has 8 divisors (see below), whose sum is σ = 337248. Its totient is φ = 224640.

The previous prime is 278563. The next prime is 278581. The reversal of 278579 is 975872.

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 278579 - 2⁴ = 278563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (278549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1052 + ... + 1289.

It is an arithmetic number, because the mean of its divisors is an integer number (42156).

2²⁷⁸⁵⁷⁹ is an apocalyptic number.

278579 is a deficient number, since it is larger than the sum of its proper divisors (58669).

278579 is a wasteful number, since it uses less digits than its factorization.

278579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365.

The product of its digits is 35280, while the sum is 38.

The square root of 278579 is about 527.8058355115. The cubic root of 278579 is about 65.3104673787.

The spelling of 278579 in words is "two hundred seventy-eight thousand, five hundred seventy-nine".