280679 has 8 divisors (see below), whose sum is σ = 324768. Its totient is φ = 237600.

The previous prime is 280673. The next prime is 280681. The reversal of 280679 is 976082.

280679 is nontrivially palindromic in base 13.

280679 is an esthetic number in base 13, because in such base its adjacent digits differ by 1.

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 280679 - 2¹⁶ = 215143 is a prime.

It is a Duffinian number.

280679 is an undulating number in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280673) 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, 509 + ... + 905.

It is an arithmetic number, because the mean of its divisors is an integer number (40596).

2²⁸⁰⁶⁷⁹ is an apocalyptic number.

280679 is a deficient number, since it is larger than the sum of its proper divisors (44089).

280679 is a wasteful number, since it uses less digits than its factorization.

280679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 280679 is about 529.7914684100. The cubic root of 280679 is about 65.4741657535.

It can be divided in two parts, 280 and 679, that added together give a palindrome (959).

The spelling of 280679 in words is "two hundred eighty thousand, six hundred seventy-nine".