679249 has 2 divisors, whose sum is σ = 679250. Its totient is φ = 679248.

The previous prime is 679229. The next prime is 679277. The reversal of 679249 is 942976.

679249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 384400 + 294849 = 620^2 + 543^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679249 is a prime.

It is a super-2 number, since 2×679249² = 922758408002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (679219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339624 + 339625.

It is an arithmetic number, because the mean of its divisors is an integer number (339625).

2⁶⁷⁹²⁴⁹ is an apocalyptic number.

It is an amenable number.

679249 is a deficient number, since it is larger than the sum of its proper divisors (1).

679249 is an equidigital number, since it uses as much as digits as its factorization.

679249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 679249 is about 824.1656386916. The cubic root of 679249 is about 87.9042087821.

It can be divided in two parts, 679 and 249, that multiplied together give a triangular number (169071 = T₅₈₁).

The spelling of 679249 in words is "six hundred seventy-nine thousand, two hundred forty-nine".