676780 has 48 divisors (see below), whose sum is σ = 1622880. Its totient is φ = 235008.

The previous prime is 676771. The next prime is 676807. The reversal of 676780 is 87676.

676780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4872 + ... + 5008.

It is an arithmetic number, because the mean of its divisors is an integer number (33810).

2⁶⁷⁶⁷⁸⁰ 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 676780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (811440).

676780 is an abundant number, since it is smaller than the sum of its proper divisors (946100).

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

676780 is a wasteful number, since it uses less digits than its factorization.

676780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 676780 is about 822.6663965424. Note that the first 3 decimals coincide. The cubic root of 676780 is about 87.7975718979.

The spelling of 676780 in words is "six hundred seventy-six thousand, seven hundred eighty".