279655 has 4 divisors (see below), whose sum is σ = 335592. Its totient is φ = 223720.

The previous prime is 279649. The next prime is 279659. The reversal of 279655 is 556972.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 279655 - 2⁹ = 279143 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a nialpdrome in base 6.

It is a zygodrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 279655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27961 + ... + 27970.

It is an arithmetic number, because the mean of its divisors is an integer number (83898).

2²⁷⁹⁶⁵⁵ is an apocalyptic number.

279655 is a deficient number, since it is larger than the sum of its proper divisors (55937).

279655 is an equidigital number, since it uses as much as digits as its factorization.

279655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55936.

The product of its digits is 18900, while the sum is 34.

The square root of 279655 is about 528.8241673751. The cubic root of 279655 is about 65.3944456873.

The spelling of 279655 in words is "two hundred seventy-nine thousand, six hundred fifty-five".