676729 has 4 divisors (see below), whose sum is σ = 706176. Its totient is φ = 647284.

The previous prime is 676727. The next prime is 676733. The reversal of 676729 is 927676.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 676729 - 2¹ = 676727 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 7⁴ + 7⁵ + 6⁶ + 2¹⁵ + 9⁶ .

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

It is a Duffinian number.

676729 is a lucky number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (676721) 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 3 ways as a sum of consecutive naturals, for example, 14689 + ... + 14734.

It is an arithmetic number, because the mean of its divisors is an integer number (176544).

2⁶⁷⁶⁷²⁹ is an apocalyptic number.

It is an amenable number.

676729 is a deficient number, since it is larger than the sum of its proper divisors (29447).

676729 is a wasteful number, since it uses less digits than its factorization.

676729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29446.

The product of its digits is 31752, while the sum is 37.

The square root of 676729 is about 822.6353991897. The cubic root of 676729 is about 87.7953664600.

It can be divided in two parts, 676 and 729, that multiplied together give a square (492804 = 702²).

The spelling of 676729 in words is "six hundred seventy-six thousand, seven hundred twenty-nine".