676345 has 16 divisors (see below), whose sum is σ = 879120. Its totient is φ = 497664.

The previous prime is 676339. The next prime is 676349. The reversal of 676345 is 543676.

It can be written as a sum of positive squares in 8 ways, for example, as 29929 + 646416 = 173^2 + 804^2 .

It is a 5-Lehmer number, since φ(676345) divides (676345-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 676345 - 2³ = 676337 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6151 + ... + 6259.

It is an arithmetic number, because the mean of its divisors is an integer number (54945).

2⁶⁷⁶³⁴⁵ is an apocalyptic number.

It is an amenable number.

676345 is a deficient number, since it is larger than the sum of its proper divisors (202775).

676345 is a wasteful number, since it uses less digits than its factorization.

676345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204.

The product of its digits is 15120, while the sum is 31.

The square root of 676345 is about 822.4019698420. The cubic root of 676345 is about 87.7787572514.

The spelling of 676345 in words is "six hundred seventy-six thousand, three hundred forty-five".