279613 has 2 divisors, whose sum is σ = 279614. Its totient is φ = 279612.

The previous prime is 279607. The next prime is 279619. The reversal of 279613 is 316972.

It is a balanced prime because it is at equal distance from previous prime (279607) and next prime (279619).

It can be written as a sum of positive squares in only one way, i.e., 273529 + 6084 = 523^2 + 78^2 .

279613 is a truncatable prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-279613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139806 + 139807.

It is an arithmetic number, because the mean of its divisors is an integer number (139807).

2²⁷⁹⁶¹³ is an apocalyptic number.

It is an amenable number.

279613 is a deficient number, since it is larger than the sum of its proper divisors (1).

279613 is an equidigital number, since it uses as much as digits as its factorization.

279613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 28.

The square root of 279613 is about 528.7844551422. The cubic root of 279613 is about 65.3911717673.

It can be divided in two parts, 2796 and 13, that added together give a square (2809 = 53²).

The spelling of 279613 in words is "two hundred seventy-nine thousand, six hundred thirteen".