680747 has 4 divisors (see below), whose sum is σ = 682440. Its totient is φ = 679056.

The previous prime is 680707. The next prime is 680749. The reversal of 680747 is 747086.

680747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 680747 - 2¹⁸ = 418603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143 + ... + 1175.

It is an arithmetic number, because the mean of its divisors is an integer number (170610).

2⁶⁸⁰⁷⁴⁷ is an apocalyptic number.

680747 is a deficient number, since it is larger than the sum of its proper divisors (1693).

680747 is a wasteful number, since it uses less digits than its factorization.

680747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 680747 is about 825.0739360809. The cubic root of 680747 is about 87.9687819708.

The spelling of 680747 in words is "six hundred eighty thousand, seven hundred forty-seven".