676656 has 60 divisors (see below), whose sum is σ = 1960192. Its totient is φ = 217728.

The previous prime is 676649. The next prime is 676661. The reversal of 676656 is 656676.

676656 = T₃₃ + T₃₄ + ... + T₁₅₉.

It is a super-3 number, since 3×676656³ = 929447933315125248, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 676656.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5265 + ... + 5391.

2⁶⁷⁶⁶⁵⁶ 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 676656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980096).

676656 is an abundant number, since it is smaller than the sum of its proper divisors (1283536).

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

676656 is a wasteful number, since it uses less digits than its factorization.

676656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 169 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 676656 is about 822.5910283975. The cubic root of 676656 is about 87.7922094640.

The spelling of 676656 in words is "six hundred seventy-six thousand, six hundred fifty-six".