676720 has 40 divisors (see below), whose sum is σ = 1718640. Its totient is φ = 245760.

The previous prime is 676717. The next prime is 676721. The reversal of 676720 is 27676.

It is a tau number, because it is divible by the number of its divisors (40).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676721) 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, 496 + ... + 1264.

It is an arithmetic number, because the mean of its divisors is an integer number (42966).

2⁶⁷⁶⁷²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 676720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (859320).

676720 is an abundant number, since it is smaller than the sum of its proper divisors (1041920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

676720 is a wasteful number, since it uses less digits than its factorization.

676720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 676720 is about 822.6299289474. The cubic root of 676720 is about 87.7949772536.

It can be divided in two parts, 6 and 76720, that multiplied together give a triangular number (460320 = T₉₅₉).

The spelling of 676720 in words is "six hundred seventy-six thousand, seven hundred twenty".